Oh no, I think trade evolutions are a good concept. It encourages interacting with friends as how record mixing from Gen III does or with the Underground shenanigans from Gen IV. But how they're handled is kind of rubbish because they tend to be exclusive to trades.
Event Pokemon should probably be available in general, but they can probably carry some perks that make attending events worth it but doesn't give those that can attend those events an unfair advantage like carrying the master ball or carrying a rare berry, fill me in there.
As for bikes, Gen 3's result turned out to be pretty unwieldy when they should've just merged the bikes. But yeah, they could've expanded on it. Bike customization would be really neat, and maybe you can customize like the horn or something. I don't know, this isn't the thread for suggestions though.
As for the "explaining" part, I can't imagine why any sort of players demand an explanation for new Pokemon. We can be here all day why IVs were changed, why TMs can't break any more, why no one is using PokeNav any more, why people aren't forced into tiles any more, and so on.
Event Pokemon should probably be available in general, but they can probably carry some perks that make attending events worth it but doesn't give those that can attend those events an unfair advantage like carrying the master ball or carrying a rare berry, fill me in there.
As for bikes, Gen 3's result turned out to be pretty unwieldy when they should've just merged the bikes. But yeah, they could've expanded on it. Bike customization would be really neat, and maybe you can customize like the horn or something. I don't know, this isn't the thread for suggestions though.
As for the "explaining" part, I can't imagine why any sort of players demand an explanation for new Pokemon. We can be here all day why IVs were changed, why TMs can't break any more, why no one is using PokeNav any more, why people aren't forced into tiles any more, and so on.