I forgot a MAJOR suggestion.
The arena. It has a HUGE flaw that needs to be corrected.
The next attackable position should ALWAYS be the next spot in the sequence. It shouldn't be 10 spots lower. Or 15. or 2.
It should ALWAYS be 1 lower.
I realize the top 6 slots are the exception. But for every other slot it should display the next lower spot. Period.

Gorgon