Just decided...Vikings need to go best player available. I feel more comfortable with them going defense (Clowney/Barr preferably) and seeing what's available in round 2 for QB.
Cassel isn't the long-term answer, but he's a suitable player for a team that can definitely benefit with a young and athletic defense moving outdoors for two years. He has experience in cold weather having been in KC and he can move the chains and get everyone involved.
It's one of those cases where he has top level talent every single place you look (AP, Jennings, Rudolph, Patterson) and just needs to distribute. If Vikings show desperation for a franchise quarterback then this has the potential to set the team back more than we know.
Also need to note that I'll be immediately optimistic if they took Manziel, but with a cautious neutrality for their long-term.