Well, I definitely wouldn't like to see Vitiate. I was thinking that it would be visions which were confused and inconsistent, such that you wouldn't even understand what you were seeing without the context of K2. In other words, it wouldn't be obvious that the tomb was even supposed to be showing you your past, present and future--it would seem like it was only showing strange relevatory visions, at least to those without knowledge that you are Revan. A battle scene from the Mandalorian Wars, a dialogue between a phantom figure and Malak, two mirror NPCs using your face, one LS and one DS, arguing wordlessly with one another; vague visions which don't mean anything on their own, but which imply something isn't quite right.
Reiterating, though, that this is still a thought experiment. If somebody made this I'd test it, but I still think Kressh's tomb is best-served as a K2 exclusive.