The TS3.5 is absolutely more forgiving than the TS3. I even find it more forgiving than the KE4 Max. It's also extremely consistent in distance. As for MPF differences, maybe it's just the higher COG??...
From the looks of online it seems the MMB is finally going away. Britt, can you give us any details on its replacement? I know there has been brief talk of a solid forging in a blade like or cavity.....