Buffalo Bills: What do they gain by bringing back Gaines for the third time?

What exactly do the Buffalo Bills gain by bringing back cornerback E.J. Gaines?

Subjectively, referencing this 2020 offseason, I could make claims like Rex Ryan did several years ago, postulating the Buffalo Bills won the offseason.

Objectively, I could only say that Brandon Beane has made bounteous additions to the Bills this offseason.

Subjectively, I could claim they are still not done making moves building on an already good team.

Objectively, I could only state that they will make additions by means of the NFL draft.

Subjectively, I could say that signing E.J. Gaines was paramount because the Bills were a better team for those 11 games he played for us in the first year of the process, then…