I have no doubt the they will continue to be altered. Most of the changes/additions I could live with if the originals were properly preserved. But 'Jedi Rocks'... that just pulls me out of the moment every time.
Maybe it would be fun if with each new release, they replace the song in Jabba's Palace with whatever is #1 on the pop charts at the time!
That, and adding yells to what was previously wordless self-sacrifice is mildly annoying. Like Vader's "NO!" in the Jedi blu-ray, and the now undone scream from Luke in the '97 incarnation of Empire. It reminds me of public restrooms, on a not-quite-related note. I seem to be one of the few men that can go into a restroom and do my business without grunting. No need to vocalize. Just do it!
What really gets me, though, is that it seems even the prequels aren't safe from tinkering. Lucas had absolutely every tool at his disposal to make those exactly how he wanted them, and he STILL feels the need to alter them. I think he's addicted.