This worked great.
I removed the MenuHandlers.add chunk at the bottom to remove it from the pause menu, and instead called the whole thing in pbStartLoadScreen, so that it's accessible from the Start menu instead of pause menu.
Furthermore, I was able to add an autorun toggle without too much headache using one of the two AUX buttons in module Input - the only thing I'd want to know is if it's possible to add more buttons altogether. I know Insurgence for example has a TON of options in their Controls, but that was done pre-v20, and thus pre mkxp.
I can't figure out how to add more buttons to the f1 menu, and thus can't figure out how to have more new options in Controls other than the 2 AUX inputs. Any insight would be appreciated!
Maybe I make this easily in next version.