Thank you all so much for your responses.

Forgive my noob ignorance, but the concussor modules seem to be self-
contained sound producing modules whereas the A-117 requires
VCF/VCA/EG etc. I see pros and cons to both approaches.

Their 8 step gate and CV/gate modules look like a straightforward way
to do your percussion lines, as well. (Save the A-154/5/6 for
the 'real' voices in the patch) Does that seem sensible to others
here or are there A-100 modules which would be a 'better' choice for
controlling those percussion units