Suggestions on my almost complete rack

Thoughts ? suggestions ? :)

An Intellijel Tangrams might come in handy.

Your module choice and placement looks kind of random. A headache in a box.
You're going to have to fight a tangle of wires, and your memory and eyesight, to tune, patch, and play that thing.
It will certainly generate a mess of audio, but a collection of high end modules doesn't make an instrument.

You've puzzled out making everything fit (the fun part), but go back and reconsider what modules, when paired together,
would be typically used in the majority of your patches. Source to sinks, left to right, building from the bottom up.
Not always the best choice, but it fits how most Doepfer modules were traditionally designed, so there we are.
Using a pair of 4 inch wires is better than draping two footers down to one corner and back.

You've got all of those complex modules, but no way to share and distribute expensive-to-generate signals accuratly.
With your 16hp, I would place four Synthrotek MST '07 buffered multiples (my new favorite 4hp mult), one on each row.
Better yet, drop a row's worth of ear candy, and put in some VCFs, mixers, and offset/attenuators to tame those modules.
At least 20% of what you've got there will never get used, beyond maybe once. It could, but won't.
Find that 20%, and simplify.

EDITED Today, 17:57

Is it ever complete? ;-)

Never.