I go back and forth between "Highlight annotation," "Strikeout annotation," "Free draw annotation," and "Freetext annotation in SpeedGrader. Clicking on them with a mouse is slow considering how many times per minute I click on these.
Please add keyboard shortcuts for these modes. There's already a set of Keyboard Shortcuts, but it's a short list of 5 items that are not as useful. ("j" and "k" are pretty good.)
Maybe numbers 1-7 could signify those modes--since the button shows which mode you're in, a user will be able to tell which one they hit.