I'm guessing if a major "shake up" trade happens, it will be either Letang or Hornqvist out, to be honest. I really doubt it happens, I think the Penguins will do smaller moves instead (even if those moves are trading someone like Sheary, which would be a significant move). Still though, the thought that the Penguins might make a huge trade is pretty concerning, because teams almost always get **** value in those kind of trades.
But just for ****s and giggles:
Letang to Vegas for Haula, Schmidt, Hague and a 2018 1st
Cole (with an extension if that would be preferred), Hague and Vegas' 1st to Colorado for Barrie