I was confused by its plugins. Despite reading docs over a few days I still have no idea what does runtime for plugins look like, does zellij download them once? on each server start? on each plugin call? and since some features like a switching to a session from another session without spawning child zellij process is available only as plugin, that adds up the confusion, like am I hitting github every time when I switch sessions?

I didn't manage to find a way to update existing session layout when the layout config changed, only to recreate it, which is super boresome when you tinkering with plugin config that is embedded in layout config.

Resurrected sessions needs to be restored manually via somewhat lagging session manager, there's no cli api for that, in general when you need something to be done in another session, you can't.

The only good built-in feature I found is stacking layout showing running command in pane, but I delegate it to tabs in niri now.

Overall I would say if you're long time tmux user, switching to zellij isn't worth it. If you're new to concept of terminal emulators, zellij is much more friendlier, and I'm sure plugins would mature, docs would improve.