I think it's great that you have to unlock flying, but I'd still rather not have flying, or at least have flying enemies as well. Biggest issue with flying is that it just cheapens the overworld, sure they made mobs tougher but once you've finished questing and can fly? Who cares. You'll fly over all the challenge. The world still wont feel dangerous because we'll just be flying over everything. Flying enemies, or even just enemies that can aim up, would at least provide some incentive to not just fly everywhere. Kind of weird that, in an expansion about Dragons, the skies will be clear for us to safely fly in...