I think it would be nice if on the battle results screen there was a category that told you how many troops all together were lost in the fight. That way rather than having to check each individual troop, you could just look at the total losses and then if you actually lost troops you could check each type individually
you can get the chronos dragon in lv. 7 or higher plains now even though it says you have to get it in the store. It was in an update message so if you don't read those you probably missed it. :)