After seeing TextMate struggle around the jump from version 1 to 2 and yesterday reading Sublime Text to struggle going from version 2 to 3 (to 4) I became more afraid of the sustainability of newer editors. Maybe it's time to hold stronger to your emacs, (or vi).
I'm not afraid. After 22.5 years on Gnu Emacs, I'm considering a jump to Textmate 2.
(I probably would not be considering a jump, however, without the boost to sustainability caused by Textmate 2's having been open-sourced. ADDED: also, being able to edit files on remote hosts is not important to me.)