I've decided to take a leap into modular synthesis and wanted to start with a small sort of generative drone synth with an added wavetable VCO with the ability to be used melodically. My case is the Moog 104hp, as I like the ability to expand it vertically with the bracket.

ModularGrid Rack

The Weather_drones, Maths, and Wavetable VCO are modules that I definitely will be keeping, but others are stuff I would consider changing. I also am unsure of what sequencer others might recommend, as well as just other modules to help it achieve its desired purpose.

Any advice is appreciated, thanks!

At first I would think about including an effects module. Minimum FX Aid https://www.modulargrid.net/e/happy-nerding-fx-aid-black-gold but I would recommend a clone of MI Clouds, for example https://www.modulargrid.net/e/after-later -audio-monsoon and to semi-randomly sequence gates and cv a clone of MI Marbles, for example https://www.modulargrid.net/e/after-later-audio-antumbra-cara. I think these two modules would perfectly complement your voices.
In the utilities field, better 4 than 2 vcas, with a contained price you have NANO MODULES ALT https://www.modulargrid.net/e/nano-modules-alt and a somewhat more expensive classic, but easily found in the second-hand market Intellijel quad vca https://www.modulargrid.net/e/intellijel-quad-vca.
You could remove the 2HP Tune and the Doepfer A-160-5.
I would add a filter perhaps, but you only have 4Hp left free...
Without jumping to the second case, it would remain like this.
That is my modest suggestion.
ModularGrid Rack

Wow, thanks for the detailed response! After looking through some of these modules I have to admit I really like the functions they offer... I'll definitely get the quad VCA as I've always heard you want more VCAs, so might as well start out with plenty. As for the FX units I'll have to look through some demos later to get a feel for them.

Your response was very helpful in helping me narrow things down, thanks!