[justaj]

The biggest i3wm issue I still have is that I can't just do the equivalent of "Hey spawn this window over there with these dimensions"

No, I have to first specify a window with some regex which will "swallow" the application window name and if I want to specify other dimension parameters well good luck.

It's also frustrating to have an unexpected reboot, and not being able to restore all the containers and their windows.

Though perhaps most of these are X11 limitations and are not present on Sway?