The remaining 20hp would be good for: Tetrapad, Qubit Synapse, or Instruo's upcoming ER-301 related faders/gates module.
Though that Instruo is 22hp so I would probably need to ditch both Chance and Ornament and Crime and then fill in the remaining 6hp with what, Intellijel Shifty?

Alternately, could get the Harmonaig Quantizer and Wogglebug, ditch O&C and Chance.

Links/Lxd/MA Mix are all good 4hp options to pair with E352 if I ditched ER-301.