[quangio]

Not an experienced mouse free|multi terminal workflow user but I find Kitty, as an alternative to terminal + tmux, is quite productive. It just works and has features I-a beginner-need like tab, tiling, layout switcher, and default memorable shortcuts.

[diffeomorphism]

Tabs, tiling etc are something many terminals offer, e.g. terminator or konsole. What they do not offer are things like running in the background or (re)connecting over ssh.