There is a lengthy discussion of “Bugaku” and potential problems with reviving it in this thread, “Are There Ballets That Should No Longer Be Staged?”
The choreography of Bugaku is strong enough to make it worth preserving, IMO. At the very least we should have Kent and Villella and other performers of the piece on tape sharing everything they know about it, so that if someone wants to try to bring it back it’s possible to do so.
I agree, it has a special perfume, as Balanchine might say. And the pas de deux is stunning. (How Balanchine avoided jail for public indecency I'll never know. :)) The question would be how and whether to ameliorate some aspects that are less fragrant in retrospect while still being true to Balanchine's intentions and the era when the ballet was made.