The only way I would sign off on Vick is if we hired Chip Kelly as our HC. That guy has a history of being able to utilize athletic QB's in his crazy fast paced system. College to NFL is a giant leap but I think the guy is an offensive genius. If there is one guy that could get the most out of Vick its him. Although Vick would probably get injured by week 3.
I think that WHOEVER the Jets bring in for 2013 will be nothing more than a stopgap for a year or two. In that case, if Vick comes cheap, I don't see it as the worst decision in the world. Can still try to develop someone behind him. Jets won't be a playoff team regardless of who's under center.
I also think that you add another quality o-lineman and a WR and/or RB and Vick could really play quite well. As it currently stands the Jets o-line is a thousand times better than that atrocity in Philly. No quarterback would remain upright with what they've got going on over there.
Line Sanchez up at wideout. Tebow at tight end. Vick under center. Run some sort of hybrid Sparano/Reid offensive scheme. We can have three guys looking confused and hearing footsteps in the same play.
The number of INTs, sacks, and fumbles would be epic.