Amen. I check the online store every day or so - lots of thoughts for that little bugger. First project that comes to mind (for me) is a hobby RC encoder. Would be able to turn a $29 Hobby King radio into a computer programmable 6 channel radio pretty easily.
Read the inputs,
do whatever mixes or maths you want and have programmed in
output the standard pulse stream
rinse and repeat.
And, with the speed, might be able to read all 6 channels on the RX end and do additional computations, mixing, etc. and output the servo pulses there.
Cheers,
Wreno