Dark ride would be nice, but I'll take an indoor boat-ride or coaster. Anything besides another screenz ride due to USF's heavy reliance on screenz (even the good attractions like Bourne or Gringotts are screenz).
But I'm not sold on why USF would need this to be family/no height requirement. USF has plenty of low height rides. Most of the rides at USF are 40" inches, which is 3 or older on average. ET is 34", Trollercoaster is 36", Villaincon is no height requirement, the three shows are no height, the dance party/play area/etc is no height.
This isn't the first time I've seen the "no height" agenda being pushed. Did several people on the forums have kids recently or something?..