Add ability to map pen buttons to right click
Describe the new feature: The in-game drivers work great, but with the external ones i had one of the pen buttons act like my mouse right click, this is really handy as the UI has many right clicking dropdown scenarios, such as "delete scores", "edit" and "collections" etc in song select, and "give host" in multiplayer. It would really help in making the UI navigable tablet only.
Proposal designs of the feature: Add an option in the tablet input settings or do it by default on tablets that have these kind of buttons.
I think adding the ability to make your tapping keys act as left and right click when the game senses tablet input in menus would be a good way to do it. That way you could have even more precise selections.