This game is good but please allow us to play against ai even if people are available to play, i'm asking you because i make more experience this way, and the reason is that people are extremely slow, takes 12-15 seconds on average to make a move.
Some tips:
1)More details on type students, on going achievements etc...
2)Add some mechanics into battles, it would more funny and addicting if u actually have to do something.
3)Make it a lot harder.
4)Group sticking.
AI battles give 66% less XP and considerably worse item rewards. Still, there is an AI button on the Single Match screen.