I was curious about this too, if the more collaborative NIN thing was still happening. What I'm kind of hoping for, although I'm not sure how realistic it is, is for Reznor/Ross to do a new mix of one of the Bowie albums coming up in the next box set. Every box set has had Visconti doing new mixes and I think it would be amazing to have Reznor and Ross' take on Outside. Not really a collaboration exactly, but kind of.