Doepfer

perhaps something that combines Death by Audio's TSA:
http://www.killerrockandroll.com/deathbyaudio/totalsonicannihilation.html

with a matrix mixer(like this):
http://www.cgs.synth.net/modules/index.html#cgs33


perhaps a lesser matrix mixer to save on costs though.
this would add new life to all modules.

best,
phil