A matrix switch is a really important module. I watched a demo at length on matrix switch being used in the 5U format and really wanted one. To see the video I am talking about that got me inspired: click here. Thankfully WMD has released their Sequential Switch Matrix and it looks great!
“Our take on an essential module. Four inputs can be routed with individual buttons to four outputs. Those routing settings are stored in an array of matrices that can be sequenced or controlled with CV. Preset routing, feedback loops, chop sequences, trigger blasts (with expander), four-bit-wavetable-synthesis, and dramatic controllable mayhem are all possible.” – wmdevices.com
For more info: wmdevices.com/ssm