I'll agree with this. If you want to play an ordinary-people game or a farmboy-to-hero game, 4e isn't the right system for it. I make WFRP2 my first choice, when I'm looking for this. (And it's a heck of a system for it, too.)
That kinda depends. If by "abilities" you mean "hugely-powerful spells which can be cast in the midst of battle", then yeah. Those are gone. But if you're talking about martial abilities, 4e does a much better job, IMO, for high-level play - your fighters, rogues, rangers, and the like have a lot more options in this case.
Also, if I wanted true high-powered gaming, I might give Exalted a spin rather than work with any of the various D&D's. Playing demigods is, IMO, kind of a niche that requires a lot of mechanical tweaks. I don't think using the same system I've been using up to godhood cuts it at that point. YMMV, of course.
Yep, those are definitely missing. I love returning to 1e - or even Call of Cthulhu d20 - for simplified characters.
No, if you're looking for a truly Vancian wizard, they're not in 4e. This would be the biggest category I'd choose 3.5e (or maybe Arcana Evolved) for.
These are a lot more arguable. Specifically, I think you're undervaluing what 4e can bring to the table. There are some aspects of D&D playing that, IMO, 4e does better than any previous edition. There are some aspects that 3e does better. There are plenty that 1e/2e do better, too.
If the kind of game you want to play is one where a wizard has a swiss pocket knife of spells which can be inventively used to bypass or defeat any social or infiltration challenge, then 4e is not that game.
My argument - and it's been made before, so I won't belabor the point - is that by removing this element of 1e-3e play, the skill system has been placed at the front and center for exploration and interaction. This can be through skill challenges
or good, old-fashioned narrative resolution (like in 0e-1e). Also, with adequate prep time, some timely 4e rituals can help a ton.
What moves this away from a friendly discussion about what systems do what well is, IMO, your last assertion that the only way through social and exploration-style play in 4e is to hack your way through it. That's a little uncalled-for.
-O