500 feet is certainly a teaser. But are there any rides that are realistically ready to go that high?
The only one I can think of is a Skycoaster. I seem to remember a TLC/Discovery channel amusement park show that mentioned they hoped to reach 500 feet with skycoasters in the near future. That was a year or two ago. The near future would be now.
Yes, it's just random speculation but I don't think another Freefall is in store, and I doubt S&S would go from 160ft or 180ft or whatever TA2K is to 500 feet in one generation.
Perhaps as a slap in the face to SFMM, an Intamin built S:TE-type ride that tops the original by 100 feet?
It's good to dream, right?