One note: having the numpad activate the radial menu is very useful (assuming it's not a game that requires constant hand-on-mouse), but this leads to different

One note: having the numpad activate the radial menu is very useful (assuming it's not a game that requires constant hand-on-mouse), but this leads to different numbering than the otherwise-more-common angle-based numbering. Probably fortunately, phone upside-down number pads are obsolete as controls. As a result, actions can gain keybindings like 1379, while remaining fully discoverable.