And Bob's solution is an interesting one: he says it "would be awesome" for Blizzard to implement "classic" servers-- that is, servers that don't have the 60+ content. They could still have the Draenei and the Blood Elves (and Shaman and Paladin on both sides, I guess), but 60 would be as high as players could go, and the Dark Portal to Outland wouldn't be open-- Naxxramas would be the current pinnacle of raiding. Just like the old days.
It's not an unprecendented idea-- Dark Age of Camelot has a few "Classic" servers, in which one of the expansions simply isn't included (and the rules are tweaked a little bit to what I think is a previous patch). That was implemented based on player demand, and so if there's a lot of player demand for a non-Burning Crusade server, Blizzard could probably put it together. Drysc answers in the thread that while it's been considered, it's not likely-- Blizz doesn't want to split up players based on what expansions they own.
But I don't think that's all that's going on here-- Bob is 70, so he owns BC. He just wants a simpler time, before Fel Reavers, before Karazhan (whoops-- would Kara be on the classic servers?), and before Shattrath City. I don't know if I'd play there all the time; I might feel kind of silly fighting to finish MC when I knew I could just log out and back in to a character 10 levels higher. But I know where Bob's coming from.