I loved Zellij, it was the first time a terminal multiplexer felt like it added significant value without significant work from me.

The only problem is that projects dealing with network stuff require aging just the way wines do. Networks are unreliable and can get into a thousand different states that are a combination of local connection issues, remote issues, input problems, etc etc. I found (when I tried it a year or two ago) that Zellij could handle a decent amount of such weird states, but not all of them. There was noticeably more "stuck" states it could get into.

It was a pleasure to use in every other way, and maybe this has become much less of a problem in the intervening time. I'm pretty sure that Zellij is going to be my one true term mux for the future, just not sure that future has started yet.

I've used tmux for ages and would go back if zellij ceased to exist, but I found zellij so much more discoverable. Want to do something new? Chances are there's a menu for it.