Hi,

how about a karplus strong module
it could have a cv controlled simple delay with feedback with the delay time computed in a
linear fashion to pitch.
it would be nice if the input didn't just have to be noise, but that you could just put
anything through it.
combined with the complex envelope generator, you could make some nice struck/bowed
sounds which i do not think are possible at present with the A-100. though i could be
wrong as i'm still an analogue novice : )

cheers

Isjtar