Yah, servers are so cheap today compared to what it was just a few years ago, kind of hard to imagine a web host putting their entire customer base (not to mention all their techs) through this kind of stress. Better to open up a server or two (or half a dozen, fifty, whatever) with this "feature" and then put all your NEW accounts on there, and offer migration to your existing customers that may want it. I think these guys better go to Costco for one of the giant 1,000,000,000 pill aspirin bottles.

I'd go with the lightppd too - I don't trust systems I can't pronounce :)