I rather like how things are balanced as far as gear goes. The vast majority of players don't do endgame savage raids because they can't, don't want to, or don't like the rather toxic and elitist endgame raider community. Increasing the gear level per floor of a multifloor raid would be self defeating. Beating floor one opens up floor two, and why farm floor one when you can just get the next tier gear in the next floor, but screw that because one clear on floor two opens better gear on floor three, etc.

As far as wings go, I do recall there being, or at least there were, consumable items that gave wings for a short time.