By slope, do you mean from the lip on to the green? If so, there is no slope on to the green. The green surface at the point is pretty much flat leading into the bunker, but when I was there last, I paced 7 steps for the green which we all agree (I hope) is not a great deal of room.
I suppose, my point is, less is more in more cases!
if you photomontage a bunker into the left hand side of the 18th at Sawgrass, what would this suddenly do to the hole? Does it make it easier? I think it does both visually and playability.