I've switched from tmux to zellij about 2 monthes, ago, it may have less features than tmux for now but it certainly does all i need, in most case better than tmux. It is much more user friendly and usable imo.

Frankly i've spent too much time in the past fiddling with complex confs and tools which expect the user to spent days figuring out a conf which work for them. Then if you don't use the tool for 1 month, or simply don't edit the conf for a big while you've forgotten half of it.

Zellij has a conf file, it took me a bit of time to tweak it at first, but i know I can understand it in a pinch. Same thing for actually using it, it's mostly discoverable.

And most importantly, it is very clear that simplicity and predictability are big priorities. It shows everywhere in the project, I totally vouch this approach and tend to do the same thing on my work projects. I know from experience than understanding your user's needs and getting out of your way to make their life easy by not having to think about how the implementation is done is really much harder that just making a tool configurable and extensible...

So, big kudos to you Zellij devs !