I'd take him only if he plays as a spare winger. He's too talented to pass up. Play him maybe 40-50 games throughout the year. A day off on each back-to-back and a few games before and after the olympics. Its not worth it if he wears himself out at the end of the year and becomes a huge liability.
I don't know. I really didn't want this team to sign old players, but Jagr is different as I don't think it will be anything else but one year.
Plus if he is the reason the Devils don't finish as a lottery team and cause further embarrassment with no pick, then sign him.
If the team has no chance by the deadline, dump him along with others for whatever prospects and picks you can get.