Blue Cat Audio will soon be releasing an update to Patchworks that will enable complex MIDI routing in one plug-in, allowing one slot to host complex synth and arpegiattor parts.
In a Facebook post they write;
New MIDI Routing capabilities will let you create crazy chains! Soon on www.bluecataudio.com!
Patchworks already offers users the chance to save plug-in chains and route in complex ways.
The latest update looks exciting.