-- I give short comments on all the designs that already had at least some kind of detail in it. I always like reading comments on my own designs, both negative and positive, and as such, I might give some critical comments on other designs as well. As long as you don't take it personal but purely as constructive criticism we should be cool. And if you don't agree with me, well.... then just forget about it;) --
Birkal - I agree that a platypus is a fitting animal for this typing, although like someone else mentioned, because of its weird looks it is a very difficult animal to pokemonify. I think you did a nice job so far and like the colors. The beak and electricity evoking elements can use the most improvements I think.
Magistrum - Nice to see you managed to come up with three equally pleasing designs! I personally prefer the frog because it seems to have the most character to me. But either of the other two designs will certainly turn out great as well. I guess the ability choice should influence your decision the most.
TeraVolt - Is this a fancy callback to a previous cap submission?:P Seriously though, it evokes the typing well without looking to 'buggy'. Would like to see an improved version!
HeaLnDeaL - I like the overall idea and the typing is clear. I think the head and back could be improved upon (make them more scorpion-like or give them another touch of electricity somehow for example).
GoldNinja - The drawing is a bit too simplistic/vague to read too much into for me. The story behind it seems to be a bit all over the place ("sandman but uses sleeping gas" doesn't seem to mesh for me). Would like to see where you take the ideas you have in a new rendition!
Sgt.Moose - Funny concept, but - as you aready implied - not so much detail yet. I will comment when you decide to make an improved version.
Yveltal - Out of the three, I like the scorpion the most. The second one seems a bit too contrived and metallic for my taste, the third one is ok (although maybe too similar to Reuniclus). The fact that someone else 'already has a scorpion' should really not deter you from making your own scorpion pokemon. Every design will turn out differently from others so really, don't worry about that. I think the 'blockiness' of the design could be improved upon though, because right now it seems unnecessarily steely to me.
mcFlareon - I like the concept and the quirky design you came up with for it. The execution of mixing a computer mouse shape with a rat might not be as easy as it seems, but so far I think you're doing a great job with it!
Regime - Very stylish design, I like the almost zombie-like vibe it gives off (due to its eyes). As of now I think it does look a little bit like an unevolved or small pokemon though, I would like to see if you can do a bit more with the fins/electric rods.
Quanyails - Interesting how this came out of the design process you described! I do like the more obscure look of it, probably caused by the 'unguided' process. You already mention the issues with the design as it is now yourself, so I don't have much to add. It seems to lean a bit to the psychic side (instead of poison) to me atm.
EpicUmbreon29 - Using mercury as a main design input is a good move I think, it does fit the typing together with the bettery. I think it might be nice if you can make it more into one coherent design instead of the obvious separation you display atm. You could also think about how you could pokemonify the somewhat generic battery design. Find out which elements a battery needs to look like a battery, after that you can do with the rest whatever you like.
Dracoyoshi8 - Very nice overall design and backstory, and it would be a perfect match with something like Dry Skin if it ends up to be the primary ability. I would personally prefer a slightly darker hue of pink for the body than the one you showed last. But that's mostly personal preference.
V4LOVER - To be honest I think your previous hornet design had more going for it than the new shroom. If you want to go with the mushroom you should improve on the electric element(s) in my opinion. The blue glow doesn't evoke enough electricity to me, it looks too much like pure poison or even some kind of water creature to me.
Chaos Wolf - I enjoy the obvious effort you put into your design. Now that you have this, I think it is time to start simplifying it and try to leave out the things you won't need to evoke your concept. For example, I think the rock-like legs (and robot-like appearance) distract a bit from the main typing and idea you have (clown fish in coral). Like to see where you can take it from here!
Gun6 - The typing aspects are clear to me, but the overall feel and look of the design are still slightly generic. Maybe you can introduce a secondary idea or behavior/character to make it stand out more?
Blue Frog - Very nice how you managed to breathe life into this inanimate creature. I think the body (chest) chape and overall pose could use some work, but I like the overall design and the goofy expression on its face.
Otter Power - A very appealing design (and as I mentioned about the scorpion above, it really shouldn't matter if the animal you chose has also been chosen by someone else). I also very much like the colors you used, they are not completely stereotypical for the typing but still evoke both of them very well. The only thing is that you might be able to use a slightly more dynamic/interesting vantage point without losing the focus of the 'top view orientedness' of the pokemon.
Sunfished - The improvements you made are good overall, so all I can say is keep going! Maybe you can try out some more electric oriented elements, since that typing does seem to be a bit too overshadowed (pun not intended) by the poison clouds in your newest rendition.
epicparker - You asked for some tips to make it more poison-y. I guess you could integrate sharp angles/edges/barbs/spikes or something similar into your design. The advantage of these elements/styles is that they evoke both typings quite nicely.
TordenOfItami - The drawing is not bad, but it doesn't look poison/electric to me at all. Especially the outfit of the mouse-like creature screams fighting to me. See if you can somehow mix it up to fit the concept and typing of this CAP better.
Boss jr. - I do agree that your previous design was a bit too spooky/expressionless because the suit basically covered the whole pokemon. Your new idea shows potential but I think you can manage to stylize the icon more to give it a bit more of your own personality instead of 'another voltorb/ghastly'. Try to keep giving the design your own touch when you move from pencil/paper to digital (which can be quite hard;).
D4rk3r - The face of your snake certainly shows what character he's got, nice! I do think the body (green parts) could use a bit more detail, maybe related to the electric typing since that only shows in the yellow 'eyebrows' atm.
Absolclaw - Funny to read your radical thought process and how the design shows elements of all the steps you took in your head. Now that you have this design, I think you should decide which parts exactly you want to keep and what you should drop. I personally feel that it 'being a rat' won't cut it to evoke a poison typing (see rattata).
WhyAxis - An interesting choice to go for a micro-scale object like a neuron, I like it! Because of the 'otherworldly' shape of micro 'organisms', I feel like it would help if you wouldn't go with the very alien cyclops-like expression. Maybe the complete opposite, like a very animate cuteface (or at least something with a lot more expression) could help breathe a bit more life in the alien design.
Arkeis - Very stylish sketches. I think you don't need any advice. You already mentioned the sketches might lack a certain degree of complexity for a Capmon. Maybe simply 'evolving' the designs could already do the trick.
Golurkyourself - Awesome! The most finished and polished design so far, and I have literally nothing to add. It's my favorite so far (I hope the ability/stats decision will be favorable!).
Superacoon - Not too much to say about it yet (since it's only a sketch). I think you could emphasize the turbine aspect a bit more if you really decide to go with that concept.
Hollymon - The improvements you made by taking the comments to heart certainly helped! I like the cute look of your mon. I worry a little bit how the design holds up without the complex colouring which in itself resembles the concept very well.
Bernoid - It's a very interesting creature you came up with, a nice mix of several animals. Personally I prefer less complicated designs though, and yours feels a bit too much like a design for a legendary pokemon atm. But I'm curious to see what you will change for your final submission!
Dragonblaze052 - Funny first rendition. I like the 'Tron-like' pattern on its body. I think you could study/trace some more real life frogs so you can improve the head and face to give your frogmon some more personality and appeal.
tea_and_blues - Nice idea and execution. I like the cutemon potential! I'd like to see where you will take it.
Rayquaza_ - Very nice styling and coloring. It shows a lot of potential to me. You might want to add some detail to the eyes.
OldManDugan - I like this design way better than the catdog, mainly because I didn't see how the previous one fitted the typing. The bug's got a lot of personality, and shows that it can turn into a very nice design. I feel you will have to work on the poison typing though, especially because of the obvious (and unavoidable) 'bugginess' of your design.
---damn that was a lot of work.