Sorry but me personally never really wanted the Water/Fighting type,
"Too Bad". The community wanted it, and you're going to have to deal like everyone else.
so what I am trying to do is "dealing with the consequenses. If it could help to decentralize the game more I think we have the full rights to do it. THIS is CAP! We should do what we want to do. And now the goal is to decentralize the metagame and I think that an ability that gives immunities is necessary.
Wrong. You aren't dealing with the consequences, you're dodging the consequences. I think it's quite cowardly to just brush something like that under the rug, when we know full well that Zapdos commonly carries HP Grass anyway. So unless the ability is "Zapdos dies upon switching in", good luck. It's best bet would be some sort of Ice attack based on X-Act's movepool guide but good luck. Unstab will do jack shit, and it's unnecessary thanks to Stratagem being the best check to Zapdos this side of Blissey.
As for "this is CAP, we do whatever we want with our metagame", I want to
get rid of that mentality completely. It's completely contradictory to our mission statement, which clearly says: "...although it is not the main focus of the construction process, the CAP project strives to create holistic Pokémon concepts
that make sense within the spirit and example of the actual Pokémon game." How does it make sense to give a Water-type an immunity to Electric, when it's secondary type isn't Electric? It doesn't. We can do anything, within reason, and with good competitive reasoning backing us up. "Because we want this to deal with Zapdos in addition to most of the rest of the top 10" isn't a good reason. The concept clearly states "most of the top 5", not all. Why is it bad if this loses to Zapdos? Why must we need to dilute the quality of this Pokemon by taking up an ability slot just to be able to switch into Zapdos, who carries a move that is STAB but is a different type anyway? It doesn't make sense. That isn't decentralizing, that's clearly centralizing.
As I see this pokemon it will need to switch in and out alot and thats why immunities are so important for it, so it doesn't runs about of hp because of switching in.
If you wanted immunities you should have voted a Ghost/Normal or Ghost/Steel. Resistances are more important in this metagame anyway, because many teams carry Fidgit, Vaporeon, or Blissey for healing.
Just look at the top 50, only 12 of them are without any immunities.
So? This metagame is centralized to Flying-types and Steel-types, how does that prove anything?
I don't say it has to be Electric immune (just to wall Zapdos), but I can find it usefull.
It's useful but completely illogical, because it's quite clear that the only reason you would make it Electric-immune is to "wall" Zapdos, which is clearly centralizing this Pokemon.
It could be fire immune if you feel thats better, to reduce the fire weakness of the current OU. Or it could be ground, ice or fighting immune if that works better (as all of those is all pretty common attacktypes. And so what if its unuseually for pokemon to do get abillities like that (it has been done as you say yourself, so I can't see the probblem) we are CAP and should make our decisions from a competitive point of view. Not flavour! Wasn't that the whole closing the "EVO projekt" all about?
Don't bring EVO into this, there was a whole underlying set of factors besides flavor.
As for your point, "who cares" if the metagame is weak to "insert type here". That's why you have 6 Pokemon on a team, to support each other and cover each other's weaknesses. Why can't we be content to just use, say Tyranitar or Stratagem to get rid of Zapdos? It's not like they're not OU, hell they're number four and number 1 respectively.
As for the it's been done point, that's nice. There are exceptions to everything, but that doesn't mean it makes sense. It's completely arbitrary to give this an immunity to anything, and it won't help it much when it continually loses to CM Stratagem and BU Revenankh because we used it's ability to beat Zapdos.
The decision to make CAP 6 immune to Electric isn't competitive in any way, it's arbitrary and unnecessary.
... I don't have a big desperate need to wall Zapdos. Its just that I could see it get usefull, since without it as I see it right now Zapdos could become its biggest counter.
You still haven't said what's wrong with Zapdos countering this, because I don't see anything wrong.
I onlyl want this pokemon to get immunities as I see it as its best option to switch in alot without taking serious dammage.
Or you could, y'know, predict and not switch into Zapdos, and instead, switch into things like Stratagem, Blissey, or Tyranitar that you can actually do damage to.
The extra weakness is to compensate for the immunity and think thats a fair trade. Right now Watermons weaknesses is Electric, Grass, Flying and Psychic. Electric is the most common attack type of them at least in OU, probobly the most widespread also (Boltbeamers?). If it loses the electric weakness and gets a not so very common weakness (i.e. Poison) it opens up more for other pokemons that gets STAB on watermons weaknesses thats not part of the top 10.
Since when does two wrongs make a right? The fact is, you're still giving this an Electric immunity, which is quite stupid as I've said many times before. Grass, Flying, and Psychic are also about as common as Electric by the way, because of the state of the metagame right now. So what exactly are you solving again?
It should be counterable, but still it need to be good enought to decentralize the metagame. But that could be done just by taking out one big OU threat. Like the fire weakness. If watermon whould be immune to fire it whould be the only pokemon that is immune to fire (except Flash Fire pkmns but those are all of Fire type themself).
It doesn't just take out one big OU threat right now, it takes out about 4-5 without the immunity. Isn't that enough?
To summerize the whole. I think this pokemon need an immunity but it still needs to be counterable (preferably by not top OU) to be able to decentralize the game. And thats why I think a Dry skinish ability whould be great for this pokemon.
To summarize, it already would be counterable if you just stopped and thought about it: you're slightly diminishing it's best counter, not even taking it away based on it's common movesets. What exactly is the point of wasting an ability on something so arbitrary and almost cowardly that goes against our mission and its own concept, especially when it will decrease the quality of the Pokemon as a whole? The prosecution rests.