Bad things
1. The thing that made more People dislike Pikachu more. Since Eevee is at the top at the competive SINGLES and DOUBLES format and Pikachu is NO WHERE NEAR Eevee.
2. Pkmn Go. I have it but will never touch it.
3. In game models and the friendly neighborhood rival.
4. trigger encounters. Just... No..... Fuck that shit.
5. The removal of EV and IVs
6. only kanto and some gen 2
7. Letting Pikachu be on your shoulder. Should be only kept with Ash. Only do this with Ash from the anime
8. I love Yellow MUCH MORE than this Pile of Garbage. Pokemon Yellow was the BEST In my opinion since they let you follow Pikachu around behind you, not some just unworthy not strong Pokemon! Pikachu from Yellow was stronger than this!
1. Pikachu certainly did get the short end of the stick with Eevee getting a move for each of its Eeveelutions. That said, if you look at their stats I'd argue Pikachu got a slightly better deal there. Partner Pikachu's stats: 45/80/50/75/60/120; Partner Eevee's stats: 65/75/70/65/85/75. Eevee was kept very balanced, arguably even more defense focused, while Pikachu was made into more of a glass cannon. In addition, while Pikachu only gets 4 special moves, one is a Water-type that covers its Ground-type weakness and another is Flying-type which hits Grass-types that would resist Pikachu's STAB (and it's second Electric-type move is essentially a Extreme Speed expy that ignores stat changes). Eevee certainly has utility with its wide coverage (not to mention all its moves having 100% of doing a secondary effect while Pikachu's two coverage moves are just a 30% chance), but I wouldn't say its why people dislike Pikachu. I'd say people dislike Pikachu because its the series mascot so its EVERYWHERE while Eevee (& in extension the Eeveelutions) always had this unique charm to it (& them).
2. In what way is Pokemon GO bad for the game? Do you mean them shoving in the Pokemon GO mechanics into the game? I would agree with that, especially when it comes to the catching mechanic. But I would say it is neat that, in some way, there's finally connectivity between GO and the main series, or at least one step away from the main series (though I can't imagine Let's Go not having connectivity with Gen VIII). Also a lot of the GO mechanic shoving decisions isn't necessarily Let's Go fault (the mechanics work there and GO have been improving with every update), rather it's the fault of the odd decisions of Masuda.
3. What models? The trainers? I can see the reasoning as I also prefer the Gen VII models. That said there's nothing wrong with these models, especially since they're used on both the overworld and in-battle so there's no art dissonance like in Gen VI. Reason I like the Gen VII models is because they feel less child-ish, the more correct proportions I feel gives a bit more "realism" to scenes. Now it should be noted the Let's Go games are going for a more cutesy style thus this won't be affecting the main games, so really this is only a problem if you like the Let's Go games but don't like the art style.
But if you're talking about the Pokemon they're the same models from XY I think, maybe given a bit more polish and animation.
But, yeah, I can't get behind Trace. As many playthroughs I watched joked, he is "Not Blue". Worst is knowing the reasoning for even replacing Blue (and thus Red as the playable character) in the first place. Friendly rivals aren't a bad thing, it's just that we've played so many Pokemon games where your rivals were buddy-buddy. And that's not asking to have a jerk rival either, just for a rival who isn't instantly your friend and maybe doesn't even become your best friend at the end of the game or has goals where you being better then them doesn't get in the way.
4. By Trigger Encounters I guess you mean the Legendary and Snorlax battles? Let me guess, your issue is with the timer, right? I agree, Timer wasn't needed. Like already the throwing the Poke Ball mechanic can be finicky with you either completely missing, the Pokemon blocks it, or the Pokemon just breaks out of the Poke Ball. Adding a Timer where, no matter what you do, if it runs out the Pokemon flees feels like them adding on difficulty just for the sake of it as it doesn't really add anything to the experience aside from extra frustration.
5. And then replacing them with the OP "Candy" system, especially when it comes to making the Pokemon bulkier. It doesn't add strategy it just makes battles last longer, at least EVs you only had a choice amount. IVs I just think they need to do a few adjustments that'll make them okay: when a Pokemon levels up they increase in one IV (so that way in the main game it does feel like your Pokemon is getting stronger) and for Hyper Training lessen the restrictions (lower the Level requirement to 50, make getting Bottle Caps easier, let us choose to make a stat have 0 IVs, etc.).
6. I hope this game finally got GF's Kanto obsession over with.
Also there's no Gen 2 Pokemon, only additional Pokemon are Alolan forms and the new Meltan/Melmetal.
7. Why? If anything that's what the games are trying to emulate, letting you have your partner Pokemon ride around on your shoulder like Ash does. Makes me wonder if they should consider doing this in the main game with small Pokemon (as well as keep the casual riding Pokemon mechanic; though eitherway would like to see walking Pokemon return).
8. Seeing as you already explained what you meant by "stronger", maybe a more accurate term was "better", "appealing", or even "cooler" or "independent".