Thanks very much for the explanations Lugia, I thought the same but I wanted to take away my doubts before spending money on something that I wouldn't need.
ModularGrid Rack
I tried to sketch a first idea, the Mutant Brain seems good for controlling the modular with the Pyramid. I left the DPO and added the Loquelic Iteras (of this I'm not sure yet but it looks like an interesting and compact VCO) because it seems the VOID Modular ones aren't available in Europe at the moment. As filters I thought of a dual Low-Pass Gate and the Morgasmotron as suggested by @ Ronin1973. The Quadra for ADSR. About the VCAs I think I need more, but I'm not sure what modules to choose. The same goes for the LFOs, I'm pretty undecided about what to choose. Perhaps some multi-function modules could be good for me, given the little space left? For now I have also left out the sequencers.
I would also like to add a sound panning module.
Am I missing something fundamental? What do you think? Thanks again to everyone.