I think starting QB always has value. We just gave 10 mil for a retired qb with average at best career, yes?It makes no sense right now while Tannehill's value, coming off an injury, is really low.
The best case scenario might be drafting a quarterback high and then having two players at the position the team can win with. Kind of like what KC did in the past draft. Then you can evaluate both players and get value in a trade.
Parker is kind of in the same boat. I've been disappointed that he hasn't been able to stay healthy. Honestly, if Miami can "steal" a wide receiver in the mid rounds then maybe there's an argument to trade Parker.
If we can fix the OL in one off season plus picks, and given up RT and DVP for it, I say go for it.