Game mechanic to take your trainer across games

[VeezyLife]

Its always fun to dream and speculate what if's. This had me thinking... it would be really nice and convenient if Game Freak would develop a game mechanic or feature that would allow you trainer/player to carry across games. For instance let';s say you just played through Pokemon shield and spent 120 hours playing through it leveling up pokemon, finding rare Pokemon with hidden abilities through raids, etc etc. Then you buy and start playing Pokemon Scarlet and you trade some of your favorite Pokemon you've been playing with for the last however long it took you to play through Sword. You can trade in the pokemon but as far as the game is concerned those pokemon are from another trainer so then the annoying obedience crap kicks in. It's perfectly logical that a trainer would be the same person in a new game (we're in a totally fictional world and mind here lol..) since it seems plausible a Pokemon Trainer would want to travel to a new continent or area to continue his or her career. If GameFreak had actual accounts that tied into Pokemon games it could allow for this type of feature to be implemented and then you can carry you pokemon with you from game to game and not have to face any of the obedience issues. If you edit saves and use PKHeX it would likely come in even more convenient as you would probably have less errors regarding IDs, at least if your are editing your own Pokemon across games..

Anyways its just a thought I had in my head the last couple days. 

Can you think of any other useful things that could come from this? Or any cons that might make it not so good afterall? Would be glad to hear any input or discussion.

Edited 4 hours ago by VeezyLife