Game Center Usefull?

Hello,
I wonder if Game Center is really usefull to a unity game? What kind of use expect of it?

I use only it to login the player. Maybe I do not use it at full potential.

Tell me.

Achievements and Leaderboards would be the most typical usecase for it.

ok then as I use a server solution (xtralife) that provide leaderboard and achievements …

GC will on ly allow user to reinstall game datas after erasing the game.

It might be better to use “Sign in with Apple” if you only need it for login.