Agreed. The team wasn't that good last season, and I can't see where people are expecting improvement.
The offense is virtually the same players. I guess there should be some improvement because of continuity. Defensively, maybe people expect some improvement from Darby, and addition by subtraction of Mario Williams? Not much to hang your hat on.
I can't think of a single positive development in the off-season. There was basically zero help from the draft. No important free agent acquisition.
Any improvements are pretty much supposed to come from continuity, returning injured players, and development by players that were on last season's roster. Like "we were all set, player-wise. Now we just need to get everyone on the same page. Go Bills!"
It's a bad joke, on the Bills fan.