Tear them down. They are an eyesore, and have been ever since the ill-fated Rocket Rods left.
If anything were to come back on the track (and let's not bring back the Peoplemover please), it would have to comply with new safety regulations (emergency exits, etc). Not to mention the work that is needed on the track and structure just from the weather wear and tear it's had over the years, let alone fixing the damage the Rocket Rods created.
What they should do is get rid of them and put a re-themed Astro Orbiter back where it should belong. This would clear up congestion at the entrance of the land and also be more aesthetically pleasing.