I picked WD for perhaps a weird reason... Its the theme thats going to get stale the fastest. The show is in the process of circling the drain (find safe place, new bad guy, safe place destroyed). I think within the next few years, WD its going to have that 24 or CSI vibe to it.
Even though Tron 3 got sacked, the movie/theme has way more provenance and Disney is going to pump Iron Man in comic movies for as long as people will go. Metallica gets to stay by virtue of being the best game in the bunch.