basic concept is to have all-in-one modules with
*direct midiIn connection (in-built MVC)
*alternatively a gate input (to be connected with seq modules)
*in-built AD or AHD envelopes (for pitch and amp modulation)
*preset list for fast loading + saving sounds.
3rd party developpers Shroomz and CWmodular added some mod inputs for modulating (basic) parameters.

Drums CW
Drums Fra77+Cwmod