I'm realizing that with a smaller pack (25L-30L), and stuffing my quilt in a trash bag, I have no need for compression across sides or front. This seemed true last season, using a little pack with basically non-functional side compression, and it seems true with the MYOG pack I finished a month or so ago, with laced side compression as-yet uninstalled.
Just went out for three days with the new pack (30L), and as low volume a base weight as I'm likely to carry (~6# BW, 40* quilt). Had 2.5 days food to start, but could have fit double that (or a bit more). The pack has provision for laced compression system, so I could add it, but didn't miss it at all. By contrast, with my Exos 58, I pull the compression straps as tight as possible.
So at what volume (or change in volume start to finish) do you consider side compression convenient or necessary? Does framed/frameless make a difference?