Well, to be fair, you never mentioned that you didn’t want to use a pedalboard. Plenty of guitarists use MS because they prefer having an all-in-one system, or prefer the FX etc. And a page turner pedal with just 2 switches is a heck of a lot smaller and lighter than most single guitar pedals, let alone a pedalboard.
Regardless, perhaps you might want to dip your feet into scripter, or maybe Ableton Live might be a better solution for your needs.
At the end of the day, MS is fantastic for a lot of things but anything beyond basic backing track playback definitely isn’t a core feature.