I really want to thank you all for you advice.

The way my synths have fallen into place thus far is
Moog GrandMa for Bass lines,
K-2 for leads and melody
B-2600 for percussion, stabs, melody and evolving textures

In my mind I was replacing the ms-20/k-2

i.e. two Osc, dual filter (hp/lp), two eg with sample and hold and lfo

To be used in conjunction with grandMa and b-2600
I really like the 2600 and grandma but I wanted to get them wild.
This small rack I’ve laid out is really my expansion to my preexisting synths.
It’s gotta do double duty not just speak for itself.
Hence all the modules.

What I find myself always wanting with my patches are more random, more evolving
More beautiful melody expansive sounds that are intriguing and surprising.

Really seems like that’s modular in a nutshell.