#5, Hmmm... forgot about the Torrent. AWD, 264hp, 0-60 in under 7 seconds... maybe not collectible, but I think it's actually a pretty neat little crossover.
Bonneville's ok. Cleaned up the styling; shoe-horned a V8 in there. That's fine by me. Same reason why I think the V8-powered Impala and Monte Carlo SS's from the same era will be collectible eventually.
#6, The ones that survive past the Craigslist hood cruiser/Midwest rustbucket stage, perhaps. They might be at or near the bottom of the value curve right now.
It's one of the reasons I don't want to sell my L67 Regal GS, it's worth almost nothing and would just get cheap oversized chrome rims thrown on it and/or be driven into the ground. Hell, I doubt my 6000 STE will ever be considered collectible either, just a curiosity that's hard to get parts for. I keep them for the sentimental value, and both are eligible for Radwood shows if I ever get the Pontiac running again.