Hi,
Soon after the MetaModule announcement last year, I asked 4MS on this modwiggler thread if it would be possible for a module running on the MM to query and change parameters on other modules in the same patch. The reply was … no (link to modwiggler). Later I asked for some more info on that (link to modwiggler), but never got a reply. It would be really interesting to know from @danngreen if that feature is ever likely to be supported in the MM firmware.
I recently published my beta testing - ready RSBATechModules VCVRack plugin (see VCVRack forum thread) that does provide 2-way parameter control of any mapped VCVRack module. I would love to be able to write a version that uses the same mapping library, but runs on the MetaModule, using Midi In/out to hook up to a TouchOSC or Electra-One smart MIDI controller. For this to be feasible, as well as access to the midi in/out stream, it would also need to be able to query and change state of other modules in a MM patch.