Without knowing how the DVD sales for TFF compare to the other films it's really not safe to say Paramount has nothing to lose. That's mere speculation.
Star Trek fans know the movie's troubled history, and they'd definitely pick up a director's edition of Star Trek V. Its a no-brainer.
Absolutely. And so would fans of alternate versions of films -- such as myself. I think I have every director's cut and special edition of most sci-fi and fantasy films.
I would add TFF in a heartbeat.