Weise is exactly what you want for a 3rd line player. Gone are the days where you want hams that just clutch and grab on a checking line - you need players that can actually play hockey to put pressure on opponent.
I mean, the guy is quite responsible defensively, he can be physical, and he will reward you with solid if inconsistent secondary scoring. Plus that damn foot speed, dayum.
When in a pinch, because someone took a night off, to make a statement or because of injuries, you can slot him up and while he won't dominate, he won't look entirely stupid.
It's with guys like Eller, De La Rose and Weise that you build a modern 3rd line that will not only play sound defense, but also control the puck and offer moderate offense to offload the pressure off the first 2 lines. That we got him for Diaz is highway robbery. As long as we don't overestimate him, and see him as a 3rd liner that can slot up in a pinch (and his contract stays manageable), he'll always have a spot in our lineup. Teams need players like this on a fairly cheap contract to dominate.