The good news is that we might be able to do this through the API, we are working on it in the meantime here is a workaround.
What i would recomend you to do is create a Simpler, then create 8 audio tracks and group the simpler with the audio tracks together. Route the output of each Simpler channel to the audio tracks input (8 channels inside simpler 8 audio tracks) and set the audio tracks to monitor "In" which is next to "Auto" and "Off".
This allows you to have one MIDI clip to control up to 8 sounds and Kapture every parameter as well.
Or you could give a shot to Sixteen Macros by Covert Operators, its actually preaty neat and would work for you.http://www.thecovertoperators.org/Live- ... collection
Hope this solves your questions,