Make no illusions; you're a Cutler hater. And giving up all that was mentioned originally would be insane.
As for the other stuff, the OL was good one year. One. Otherwise the two on the left have aged and degraded, and Mills got much worse. There is a reason Forte always gets hit in the backfield. Drafting a blue chip OL like Peat or Scherff would almost certainly improve the offense byconsiderable margins. Scherff next to Long would be a runner's dream, and something defenses would have to overload against.
I have said i dont like or want DL or OLB, but there is certainly uncertainty. And the flaws at S are as you noted; I still think Collins would make a huge impact.
Agreed about the second tier QBs. If the Bears want a QB, they should look outside of the 1st.