[IIsi50MHz]

> Take something like Excel, which many users use daily for work, but most people likely only use less than a dozen common keyboard shortcuts. Practically nobody navigates the ribbon with their keyboard.

Partly, this is because:

- Excel has high latency to enter keyboard-access mode. Type too fast, and it misses keystrokes.

- Excel's ribbon keystrokes change depending on size of the window, and how much stuff has been added to the ribbon by VBA in the workbook, an add-in, or the user

- To a lesser extent: some of Excel's ribbon keystrokes "make sense", but some bear no relation the the target item even if a "sensible" keystroke is not already claimed by another target.