Probably answered your own question a bit.
Bills are middle of the league investment on OL.
In return, you can target above average pass pro/below average run blocking, vice-versa, or average at both players. (in theory)
Maybe you get lucky and develop a hidden gem, but the guys who do both pass pro and run blocking at an elite level typically make a lot of money or are drafted early.
Even then there is no guarantee. Cinci is a prime example.
Top pick Evan Neal was unplayable against Dallas.
OL’s around the league are on the struggle bus.