I think they stayed the same in most aspects. This isn't a stacked roster by any means. It doesn't have a ton of depth but the starters are solid at most positions. Oline and WR are weak to average.
This year will be interesting because if Josh Allen plays like they hope he can, the team could look a lot better quick. If he struggles or needs more time, it could be a rough year.
I think they are trending upward long term however. I feel as good about the direction the team is heading in as I have in a long time. Feels like an actual plan in place now as opposed to, lets try this or that for this season. a 5 year plan instead of a one year plan