You know... the original concept for the WDW HM staircase wasn't even the Escher Staircases. There were plenty of other concepts kicked around (still stair themed) that would be SO amazing. Also, considering the size of the room, they could really get away with it.
Also, just imagine looking off to a staircase in the distance and seeing doombuggies go up it (think ATIS Microscope) or even looking up and seeing guests get into doombuggies on the ceiling! They have quite a few concepts left over and if they used just a few, it would be like taking WDW HM's staircases and even enhancing it more.