Thank you very much for the quick response

but you won't fit that in until you realise you need another case... (note I'm not telling you to get a another/bigger case)

This made me smile, but of course you are right.

otherwise reasonably balanced

I am glad to hear that, seems that my long studies on here are showing effect ;)
A matrix mixer seems very interesting, but do you think of mixing cv's or also audio ? Should i toss the Erica Synths Stereo Mixer out, too ? Than i could put in a Doepfer A-138m, or are there better (smaller) matrix mixers out there ?
I think with a matrix mixer i can toss out the A-183-1 Dual Attenuator, 4HP more space available, or keep it ?
The Happy Nerding FX Aid looks great, too. It can do multiple effects simultaneously, or not ? But it's hard to come by used, and new fairly expensive. I'll think it over.