I'd love to see either The Nightmare Before Christmas or Corpse Bride re-imagined as a stage show. Corpse Bride would probably be easier, but TNBC would be awesome visually(I imagine someone like Julie Taymor would have a field day with that one).
Also...
-The Mask Of Zorro
-Cruel Intentions
-Mean Girls
-From Hell
-Beetlejuice
-Sleeping Beauty
-Jawbreaker
-Hercules
-The Flight Of Dragons(If they could find a way to pull off the dragons without it looking tacky or cheesy)
-Friday The 13th(Make it a comedy...Like what they did with Evil Dead)
"I am the Phantom of the Opera! I'm the gayest supervillian ever! OoooOOOooooOOOoooh...Beware of my scented candles...OoooOOOooooh...Scented!"