not sue if it's cause it's beta, but you can buy the 2 hero's Sadron and azazel for free, normally they cost 30 kreds and some crystals, but it doesn't charge....
just started but i'm missing, during the battles, the amount of a kind of units that are on the field and the max amount created
secondly, during the battles, might be handy to have a little info of the skill when you move over it (didn't read their info before entering battle....)
 "Epic War VI"){kind=icon}
thanks for the bug report