My feelings on the arena so far
Hi! I've tested the arena and I want to thank the developers, they did a good work :)
It's quite addictive and it's funny to meet (and win :P) some of you guys that are posting here. My main goal right now is to be the 2nd highest non-100 level ranked player haha :D
About some improvements that could be done in the arena, the most obvious one is to improve the AI! It's quite easy to win on attack and very difficult for your defense team to achieve something... Another improvement could be to involve your troopers in the arena too, so you could borrow one their toons into the arena like in the normal levels and gain trooper points from it. The last thing, the one who gets the first turn has a big advantage. I would give some stat boost for the one who is not starting, something like +10% boost in defense and MR. Not too difficult to implement, and you could vary the number easily between versions if it needs to be fixed.