I believe Brohm is the answer at QB - solidify Oline, dline and lb. get a good HC, OC and give him a year. If the same guy who played at Lousiville doesn't show up next year, then draft Mallet or Locker (if available). but I think w/ a stronger Oline and with time to throw, Brohm will have a big career - the talent is self-evident, just build the line and let him throw.
Incidently, Edwards had time to throw at the beginning of the year but "checked down" so it is possible for Bills QBs to get time - I think the Oline will be mostly 2nd yr players next year but they should get some solid vet help. I like Incognito and Levitre at guard. and when Wood is healthy, I'd like to see him return to his natural position center. Recall he was Brohm's college center. We need to solidify the tackle spots. but not through draft -