GTA 4 and 5 would be amazing. Those are x360 games originally, so they should run well, now with controller support, wow, I need those games.It's the Xbox One S.
It all comes down to developers. They need to get their hands wet and put the iPad Pro to the limit.
NBA 2K does looks like amazing. As does Fortnite, PUBG.
I need to see Rockstar Games showcasing GTA SA, GTA IV, hell i'll take GTA V. COD Mobile is going to be fun.