Also count me in on the consider to trade JvR camp. He is the highest trade value on the team besides Morgan.
He will probably be a dominant player until his mid 30's... that is if he can be resigned in 3 years at all... but for a truly efficient rebuild, if a stud C prospect or D prospect can be got, maybe in package with another player or prospect, he needs to be traded for it. No questions.
Otherwise hold on and see. But as for insulation, he does provide it, but so too can some bargain free agents who are coveted for their quality 'character'.