@golddrone, nice rack update (Thursday July 21) I see that version as having zero waste.
I do think that setup is a bit too bare bones to be deeply usable / enjoyable. IMO some very solid adds would be:
-- envelopes of some kind, depends how many channels of envelopes you want, and how deeply programmable they need to be. I like Stages (not sure that is still buyable) since it is up to 6 very basic envelopes or 1 huge complex envelope depending on how you patch it. That said, there's a lot of merit to smaller, simpler envelope packages.
-- you'll want something to wrangle CV signals with: offset, gain, invert, mix, etc. SISM and Triplatt are my go to's, but there's options on that front.
-- do look at the expander for Batumi, it's good bang for buck in 3HP
That said, overall I think your 2nd rack is a stronger "core" design and is all "no regrets" modules including several top choices in their respective categories (e.g. Pams, Batumi, FX Aid, QuadVCA, Plaits).