I'm still on Sequoia for this reason. I want a UI optimized for displaying text content and mouse and keyboard control. Mostly keyboard. I definitely don't want the larger border radius on the windows that would seem to be designed for touch.

Isn't that his point though ? Their plan seems to half-ass touch support (i.e. the menu bar, minimize/close buttons, etc. all stay in their current size), so it seems like a waste of hardware to include a touch screen just for very little functionality. If instead they make the UI friendly to fat fingers, they'd very much affect the mouse/trackpad experience.