LOL - you want President Quayle?
I get the feeling you're moving towards a Quayle presidency rather than a second Bush term because of the amount of writing on the VP pick from so many perspectives-if Bush and Quayle serve 2 full terms, I imagine such speculation about dumping Quayle will be relegated to a footnote in history. Plus I see no other reason for Bush dying before 2000, as you've hinted, other than an assassination or a stress-induced heart attack after one too many arguments with congressional leaders.
I predict that Bush wins in a squeaker over Clinton (or Tsongas?), while possibly losing the POV-and is successfully assassinated by Sadam's people shortly after the beginning of his second term. I could be wrong though.
I'm no Quayle fan, but will be interested to see what he'd actually do in office. My suspicion is he'll be better than some people would imagine, though nowhere near presidencial great status. The Dems will most likely win in 96 anyway, so any Quayle admin will likely be short-lived.