Her return wouldn’t necessarily be the biggest game-changer for any plotlines, but she’s the neutral force that could alter the course of the All Out War from the outskirts, adding further texture to Dwight’s own story.
Plus, Sherry gets very interesting in the comics after the War is over, so we’re hoping for that to happen in live-action as well.
She got name-dropped again in this most recent episode, too, which makes me think she will reappear at some point soon.
There are still ways to keep things interesting, though.