You need VCAs! Here are my suggestions:
Get rid of that Erica Synths mixer and Lapsos Os module, replace it with something like an Intellijel Quad VCA that also can work like a mixer and attenuator.
Add logic module and mult combo like Mutable Instruments Kinks and Links. Powerful and cheap for modular. Gives you a mixer, logic and mults in small space.
Get rid of Voltage Block- it takes up way too much space for a small rack and since you already have Pam and two sequencers with Mimetic Digitalis and Varigate 4+, you don't really need it.
More modulation- maybe add the 0chd module for 8 LFOs in small space and a random voltage generator like Wogglebug?
You want the ability to do sample and hold and generate random patterns.
Here is the re-worked rack and let us know what you think?
I made a lot of the same mistakes starting out and thanks to folks here like Jim and Lugia, learned and have a good setup now.