That's a lot of great feedback! Well, I guess all we can do is sit tight and wait for the CK. Anyways, I stick to the magicka used per second idea. Naturally, mages will have an edge over warriors because they have more magicka. This is logical. In Morrowind, one of those factions had castles through which the entrance would only be by levitating and entering from above. The reason that those guys gave was so as not to let "barbarians" aka to them, Nords and warrior types easy entrance. There could also be a dragon shout which levitates like PirateDragon mentioned.