In any scenario, this should be all that one needs to get a Bill & Ted sequel off of the ground.
Naturally, we think that the idea of older Bill and Ted is far more interesting than younger versions of classic characters, recast with unknowns.
But as Solomon notes, the idea in modern Hollywood is to reboot, to go younger, even though that’s not the story that the original creators want to tell.
After all, has Dumb and Dumberer: When Harry Meets Lloyd taught us nothing?