Fatman mod to add square wave?

[Rob & Heather Williams]

Hi folks,

Is there a PAiA Fatman mod out there for taking the sawtooth
output from each oscillator and triggering a simple
squarewave from it?  The resulting squarewave could be
reinserted back into the rest of the Fatman for further
processing.  

Also, what about a circuit that could take the sawtooth
output of each oscillator and smooth over the rough edges
enough to give it a pseudo-sinewave?

Another idea would be a simple white/pink noise source for
wind/ocean/snare drum effects.

I've seen a lot of mods out there for the Fatman, but how
come nothing like these?

Robert