I love fighting games with absurdly large rosters, especially ones that play well. Almost every mobile suit has something unique about it and even if the game's emphasis on movement and ranged combat makes mobile suits suits like Cucuruz Doan's Zaku kind of bad when compared to something like the Nu or Zeta Gundams, the overwhelming majority of available mobile suits are at least good enough to be viable.
My only real complaint is with a few specific omissions from the roster, but that's basically just the G Gundam fan in me being mad that Gundams Bolt and Maxter didn't make the cut while the Rising and Dragon Gundams did. It's also kind of odd how both Barbatos and Barbatos Lupus are in the game but Barbatos Lupus Rex isn't, but I'd need to look at when that actually first showed up in Iron-Blooded Orphans to see if it even could have been included in the game or not.