I had the same thought about the talent in the secondary, but I agree that it is too late to make a change now. If we continue to get quality secondary players I am sure Bronco wouldn't mind switching back to the 3-3-5. But I think he would want the pipeline full before such a switch.
What about a 2-4-5? Again, too late to make a switch, but I am thinking the formation has a lot of possibilities in the future (including blitzing from multiple places simultaneously). We seemed to be stocked with LB and DBs. Doesn't TCU run something like that? Or maybe they run a 4-2-5. I don't know. Forget I said anything. I'm just ready for football to start.