Which fantasy novel would you rather see as a movie than unfinished Tolkien?
Tolkien only wrote about the Second Age in summary form. We don't have details for a great deal of it. All we have are the events on Numenor, the crafting of the rings and the final battle. All the rest is going to be filled in by some pretty unproven writers. The chance that this can be any good seems minimal.
But whose work should they have chosen instead? I'll throw out a few suggestions to get the ball rolling.
Michael Moorcock's Eternal Champion series
Zelazny's Amber series
Robinson's Mars series (to stray into science fiction)