I'm particularly impressed by the fact that the new TUI using libtermkey means that they can bind M- and C-S- combinations in the terminal. This is something that has really plagued emacs terminal users -- the terminal UI can't handle all the key chords that the graphical UI can, which really breaks down for some modes, org-mode in particular. It's not clear from the documentation whether M-C- combinations are handled, which would be especially useful on emacs.