I like TUIs keyboard-centric. Mouse can be a plus, but it should never be necessary.

That's fair... I feel that way about GUIs too in general though. Everything should be keyboard navigable and reasonable control flows. Tab and arrows, etc. Should be able to control focus and selection (enter).

I admit I don't always pay the most attention to it, as the UI components I tend to use do a good enough job of this. But I'm usually pretty consistent with it.