Okay, just going through the first tutorial[0], I am convinced that Zellij is truly something else. I've never opened up my wallet[1] so quickly for any open-source project, but here the author is clearly creating something amazing (and maintaining awesome documentation and tutorials!). Thank you a lot for this recommendation :D
BTW this is the first time I've seen a working drag and drop TUI (you can use drag-and-drop to move floating panes around).
[0] https://zellij.dev/tutorials/basic-functionality/ [1] https://github.com/sponsors/imsnif