When noticing this on your Master List of things that could be restored . . .
Most of us have already seen the picture of the area the presumably holds the Sarlaac . . .
. . . but the "caves" to get to that "room" were awfully messed up. Lacking several textures, an incomplete walkmesh, and being able to see beyond the boundaries were all major problems of that map.
A suggestion: If you decide to restore the Sarlaac pit to KOTOR, skip those caves and substitute them with one of the items that Quanon put up for use over at LucasForums. Just look for the Quanon's Big Sell Out thread.
Of course, you could always grab the catacombs from Korriban in the Shyrack Cave as another idea. If you turn it around 180 degrees and use the spot where the three Sith students escaped as the entrance - and reskinned it to suit a Tattoine environment - that could suit your purposes quite well. I wouldn't recommend the Crystal Cave on Dantooine as there's only one way in or out of it.
Before you say no, I'd recommend trying to to go through those caves yourself and see how big the "caves issue" actually is.
In case anyone else would like to see first hand of what I'm talking about, head over to FileFront and look up Darth InSidious' "K1 Lost Modules Pack" and download it for yourself.