SGE is something that looks bad in level...
Not really - you can have a really poorly designed and ugly level, but it might not actually contain any SGEs. Then again, an SGE might improve the visuals. Like the 'deliberate SGE' mentioned here - Johnny was clearly going for a layered waterfall effect and I think it works well, but clearly there are some who think it looks like an SGE. It's a matter of opinion.
Anyway, this level is great. I wish Johnny would return and polish it up a bit. Also, as far as I remember, wasn't there an impassable bit in the tower in Lost Vegas? I had to fiddle in the editor to get around it, I think...