Outlive right? Session handling is one thing I recall being the best feature of tmux/emacs.
The solutions are better these days for session handling in emacs with save-place-mode and one of:
persp-mode
bufler (using bookmarks)
However one of the biggest advantages for me is also having things like eshell or vterm get restored. That's arguably a less emacs friendly way of doing things than say using a compile buffer or async-shell-command with proper history, but... can't change over everything all at once :)