Note mostly this is NOT regs. Granted there will be the occaisional reg somewhere, but mostly it's people I don't recognize. Also although it's been magnified with the 2x promotion, it's common to see at least one table with a double digit waiting list during peak times. Like I get the point of table selection is to find the loosest tables, but even if you've got an average pot of 30 big blinds, a vp$ip of like 35%, you know it's not going to stay that way when 10 other people who also are using the same logic you are (thus probably not absolutely horrible, because they consider things like this) replace people at the table. Personally I'll do the ones with 2 or less first, then if I need to I'll do the 3-4 person waiting lists, but after that I'll just wait for tables to have less and get on them. There's always a 6 big blind 9% vp$ip table with 0 or 1 people waiting, and most likely when the fish get replaced it'll resemble that table more than the juicy one you signed onto.
w/e, pretty sure Chuck hit the nail on the head.