update:
i dropped some of the mults, the dual ring mod, the doepfer moog filter, the black VCO expander and swapped the big erica filter to make room for the smaller polivoks, move the wasp filter & mixer down to the black row, add a stero panner and swap in the AJH synth diode filter and mixer with ring mod as it's supposed to be one of "the best" sounding ring mods even if it's a space hog, but it adds mixing flexibility.
i try to use the best sounding modules. i know the bubblesound SEM 20 is more popular than the studio electronics SEM, but i didn't hear it make any better tone than the SE which takes less space up. i might drop the sample & hold to make room for the bubblesound after hearing a demo that turned me off to S&H. i THOUGHT it's how joe walsh got that twangy juice harp sound in the bridge of life's been good, but the online demo made S&H sound like an annoying variation of annoying random voltage. metallic twang? cool! non-melodic tonal babbling? not!