My concern is that Formenton might regress in London. How? Here's how - coaches want to win, so the kid would be double shifting all over the place and probably logging 24 minutes a night as a forward. What ends up happening in those situations is that players subconsciously learn to coast a bit to conserve energy when they can. Needless to say, you can't coast in the NHL, so that's the first bad habit that coaches have to break with hotshot rookies who come out of CHL.
If Formenton was languishing on our fourth line, playing six minutes a night, then absolutely I would say send him back. That's not the case though - he'll be in our top nine all year, and learning how to be a pro in the process. I say keep both of the kids here - their best classroom is right here in the NHL.