Combat damage no longer using the Stack Seems more complicated now. Because you have to figure out what you oppenent may have in their hand and what order you want to block with your creatures. I'll terror your creature in respones to you unsomming it after damage was on the stack (gone) casting gaint growth on your first blocker, have a low defense high power blocker as your last creature (now), etc but does make having an army of little guys better at killing a big guy!
Every thing else they changed seems good... but are there now two removed from game zones Exhiled and Side Board?