how are you expecting to do final mixing/monitoring - always through the es9 or with an external mixer?

Good question...
I added a Erica Synth Links so that I can use an external mixer, too.

I would drop the tritone and compressor

Why?
I think I will need the sidechain of the compressor and I am also looking for a way to saturate signals.

kick hat snare are next to each other - so very cramped - each of those modules is 1.16cm wide - you may want to spread them out a bit in reality

Yeah I almost thought so :)

I would swap the doepfer matrix mixer for something a bit smaller - AISynthesis does a 10hp one!!

Thanks for the hint!

spread the vcas about

What do you mean ? You mean I should also spread them like the drum modules?

unless you are smitten with the Milky Way I would swap in an fx aid xl - more options for effects - similar hardware

Thanks again! Did not stumble upon this module yet.

Here is the updated rack.
As stated in the first post, the system is a first idea for the future and I wanted to get a feeling for a balanced system.
So does this look good now?
ModularGrid Rack