I love Aerosmith, LZ, and some others on the list, but honestly if they were to update, they should stay away both from "older" rock AND the pop drivel of JB/MC. They'd need a band that fits the name ROCK 'n roller coaster, while being a little more recent than bands that were at their peak in my childhood (or before I was even born, in the case of Zeppelin!).
At the same time, going *too* new risks picking a group whose popularity doesn't endure.
So I say, pick a well-established rock band from the 90's, one whose members are all still alive and maybe the band is even still recording. I vote for someone like Pearl Jam, Green Day, or the Foo Fighters.