I know I'm going to be in the minority here, and I'm usually on the side that everything should be HD, but for IASIP... I don't think they should. The move to wide-screen SD was fine, but I think this show requires a gritty, "independent" look. The barrage of easily-recognizable character actors this season has been a detriment to the show, IMO, and a move to HD would make this show appear like any other prime-time network sitcom.
I'm still loving this show, but I think they need to watch where they take it to keep its edgy feel and humor intact.