I just switched to tumbleweed with gnome and I was shown firmware updates, package updates, and flatpak updates all from gnome software. Also there's a whole gui in yast for searching and installing packages. I haven't needed to print anything yet but i haven't run into any difficulties elsewhere.
I just discovered PaperWM a few weeks ago and I'm hooked. I can't switch away from Gnome unless another tiling scrolling WM beats it. I hope someone makes a version of it for Cosmic.