[dustinmr]

https://regolith-linux.org/ solves much of what you’re asking.

If windows don’t behave, I put them in floating mode with Super-f or Super-shift-f to toggle. As you say, full screen when they shouldn’t be, or vice versa. In practice, the only app I have issues with is Zoom.

The i3bar implementation, includes battery charge, network info, etc. a click takes you to gnome-settings, where you can make changes. One of the few changes I make to i3.conf is to move the bar to the top. Personal preference.

If you tried it and liked tiling before, regolith is worth a shot. It’s pretty well done.