oh, dear. I think had he lived, maybe the special would not have been aired, or it would be used to point out how a man sinks, then recovers. Would Elvis have been given to opportunity to preview the Special before it aired? Given a chance to make some editing suggestions? I am convinced that he would have made another comeback - in his own personal life as well as his music. It seems that he was on the road to making some serious changes anyway. About time, a lot of people would have said. There would be a lot of talk about why it didn't come about sooner, why did he let himself get pushed around for so long.
His answers to those kinds of questions, IMO, would have been sketchy at best. Elvis was rarely confrontational, and that's not something one can overturn. I know, you're gonna point out his erratic behaviours on stage, his rantings, but to me, that was Elvis being backed into a corner - and his substance abuse. Maybe seeing himself the way others were seeing him - that should be a catalyst for anyone, and especially Elvis, whose primary concern was how he appeared to his fans.