Guess its time to start taking them apart to see whats going on in there.
Sounds like a plan.
I don't think the pedal moves an inch on mine before the brakes start engaging.
I'd at least start with an inspection of the MC, lines, calipers, and pads to make sure everything looks good (no leaks or super worn pads). If nothing jumps out at you, maybe you can get away with a good bleeding.
Good Luck.