I was thinking the same thing 2 months ago, I used tmux locally and remotely for 5 years with advanced features in bashrc using systemd-run to start sessions and keep them open.
But there were always some problems with copying, terminfo features, truecolors, composed unicode...
And recently I changed my mind about the usefulness of a multiplexer, after all only some remote machines were adapted to my workflow, most of the time I just used it locally and had to deal with multiplexer and terminal issues at the same time.
So I tried Kitty again, Kitty claims that multiplexers are a bad idea and that the terminal can do more and better, and it's right about that. Multiplexers should be replaced by advanced terminals.
But there were always some problems with copying, terminfo features, truecolors, composed unicode...
And recently I changed my mind about the usefulness of a multiplexer, after all only some remote machines were adapted to my workflow, most of the time I just used it locally and had to deal with multiplexer and terminal issues at the same time.
So I tried Kitty again, Kitty claims that multiplexers are a bad idea and that the terminal can do more and better, and it's right about that. Multiplexers should be replaced by advanced terminals.