Bingo. PJ and Dawand were maybe the best OT tandems I have watched in my Buckeye fandom, or darn near it. And that fleshed out in the draft. There is going to be a downgrade there, though it might not be as bad as we think. IOL I honestly think will be great with D Jackson (could play RT honestly if it puts the best on the field), Hinzman/Cutler/James/Vimahi, and M Jones...some combo of that will work. Tshabola/Fitzpatrick/etc. are guys that could come through with a good summer camp even if we are not in an ideal situation.
But your point is dead on, even if Cutler and say Simmons do not start, the competition is pure upside. It will drive the guys on our roster to improve, or in theory it should. And the portal can be used for depth too, ideally Simmons would be a starter but if not, the OL is notorious for injuries and we need guys there.