A second, radial style quick-menu would greatly enhance the smoothness of my workflow. Ideally I'd bind it to finger touch, while using the existing bulkier remote-style quick menu on the default four finger tap. I think certain functions, like rapidly switching back and forth between brush and eraser, are much better suited to directional swipes where you don't even have to look (whereas with the current quick-menu, you have to spend fractions of a second each time ensuring your finger is on the right button). It's only fractions of a second each time, but it adds up and goes a long way in making the workflow feel much clunkier than directional swiping would. IMO this radial style menu is best suited for getting as close to desktop style hotkeys as possible, in terms of speed and fluidity. Functions that need to be used less often, but of which there are many more, are much better suited to the remote-style quick menu that currently exists. Using both in tandem would be fantastic. I know you can use a keyboard for quick functionality like I'm suggesting, but who wants to do that on their iPad? Directional swipes using a radial quick-menu can provide similar speed and functionality.