I don't want to beat a dead horse, but someone's gotta do it.
What about a BK16 in D2? I don't think I'd want to go bigger in D2, but that kind of edge retention on such a good all-around kind of knife would be worth a bit of a premium. If it could be done for under $100 I think it could be a hit.
This was talked about a few times right after the BK16's release. At least once by Kabar, and then another time by Spark (owner of BF) as a potential limited run BF knife of the year type thing.
As far as I know nothing ever came of it.
But does seem possible.