To be honest the best course of action would be stripping this team down, keeping the few long term pieces you have, and maintaining flexibility but they won't do that.
Locking into a 32 year old won't work either. They'll be just good enough to be an early playoff exit. Hurray.
Who looks at this team with Kreider finished, Mika finished, Panarin almost finished, Trocheck having already posted his best year, Lafreniere never having taken the step to stardom, and then says, "Yeah, this team is ready to beat Colorado in a 7 game series, if we add Miller"?
It's fantasy.