Well with 7th Heaven we should be able to alter the fonts only for the start screen, so it seams pretty much possible to do it. It also depends on Hextlaunch if it read dynamical added/changed files, but if I remember right it does.
By the way does somebody knew how to activate rumble for a controller? The Ultrasound can read and replace the sound of the game, so it should also be possible to run a rumble script together with the sound.