[garbear]

It seems to me that better approach would be to refactor the Kodi profiles and then integrate all of these features into the Kodi profiles. Most of these features doesn't make sense to be assigned to each player in-game.

100% agree. However, not an insignificant chunk of my life has been spent refactoring Kodi profiles, and while the code is loads better today, ultimately Kodi profiles have to get ripped out and redone properly. It's just not a task I'm able to do, so we're left with in-game profiles, whatever those end up being.

Think of this:
You can change the Kodi profile and inside the profile you get your avatar picture, your button maps, your saved games and your your achievements account (and a Netplay account). If you don't need more than 1 profile, you simply stay with the default profile and don't need to care about it.

If we assume Kodi profiles are a lost cause, how would this work with in-game profiles? Maybe, instead of the profile list I posted, we have an "active" profile with avatar/maps/saves/achievements? Similar to Xbox, how you log in with an account. And with a default profile. In fact, I took detailed notes with screenshots on the Xbox model, in case I wanted to use it for Kodi. So that's an option, and not a bad one.

Now how would it work with the player profiles assigned to each player in-game? You can't have a different player profile selected for each player, can you?

I guess you're right, it wouldn't really work with profiles assigned to each player in-game. All achievements/saves would have to be copied to all profiles.

That was kinda the idea I was thinking of, where if you have a co-op arcade game like The Simpsons or Ninja Turtles, and two players beat the game, they both get the achievement. Or if two players race in Mario Kart, they both save the results and take the results with them.

But it's not like you can ever bring the results back: you can't "merge" saves from two different players, one would always be overwritten.