I like it in theory but the small demos I've played with lack a lot of the details that GUI toolkits have converged upon. Small behavioural things ingrained in usage patterns that have to be reimplemented.
First two that come to mind are tab/shift-tab navigation and being able to adjust sliders roughly with arrow keys.
First two that come to mind are tab/shift-tab navigation and being able to adjust sliders roughly with arrow keys.