+1 spot on. I know junior said (in his infamous us and liquid are 50/50 interview) that "My game is like, I think on T side, supporting riflers getting map control, holding angles for them, flashing for them, but FURIA it was just like... arT goes here and we go here, or arT goes here and we go with him, and it wasn't really what I wanted to do. I tried talking to guerri and arT and giving my opinion on some things, but in the end it just didn't work out."
Basically it seems FURIA doesn't really set up their awpers good enough, and they aren't adapting to the skillsets of the AWPers they do have. It seems they got really lucky with HEN1 because his AWPing style matched up with them, so him leaving really sucks for both parties.