Live 6/12 3 handed, 3 hands.

[donger]

what edge? Having the blinds know that you have a random hand is just going to make them play better against you. You want the blinds to at least THINK that you're being selective, even if you really aren't.

Can you three-bet your own straddle after the other players have called? If not, I can't see any advantage to straddling the button.