With only 6 draft picks and holes at QB, WR, OLB, ILB, CB, OG and TE I'd say they needed the best draft in NFL history plus some undrafted free agent home runs as well. Realistically, if it's only going to happen via the draft then the Bills are still 3+ years away from being a championship contender, and that's if they stop losing starters via free agency that they have to replace.