Who cares about level curve?You're only stating things that suit your playstyle, who cares about "level curve" or "trade evolution". Why is it so important to have your 6 pokemon early ? Nothing. I could stay with my starter until badge 6 and pick 5 other 'mons after that point and have no problem with the game, where is the problem in that ?
And maybe trade evolutions don't work for you. Never had a problem using trade evolution.
Players and game designers . Even the letal joke characters deserve a breathing point, look at the FE franchise for examples, johto doesn't give you that.
It matter to people that replay with only one console after GTS services die for that generation and for emulator , it's content locked out of the cartridge experience.
6 Pokémon early.
6 Pokémon early isn't important in most games , OUTSIDE of HGSS and GSC where the exp curve goes to shit!
Closure on your post.
You ran out of arguments to defend the Johto games and you start to use anecdotal experience that doesn't involve gameplay , face it. Johto is a structural mess from a design perspective and it actually affects core elements of the gameplay.
Why is this relevant to SM?
Because SM is confirmed for a mix dex generation and we are worried about this small stuff , BW exp curve is a blessing for experimentation and party rotation and I'm grateful that the new mons and A forms seem to be decent enough.