personally, i miss window(1) in base. i used it when screen was not yet installed, and i used it for less annoying setup of a complex display with multiple overlapping or larger than your actual display windows. it has features that neither tmux or screen have.
i don't like the way that tmux works and don't use it, so i am pro on window coming back. i would have objected to the removal back then if i had been paying attention. .mrg.
