Porting to norns might be something I’m interested in doing once I finish some other things, but also totally open and super stoked if someone from the community wants to first!
At a very basic level, this would be really easy to do…you could copy the script over, update the lines doing output to interfacing with something like the polyperc engine (or whichever engine you’d like really), and move to using some sort of clock on norns instead of the input 1 stuff.
Grid would lend itself well to the control of the stage count and stage gate modes. The 16 8-way sliders give the M-185 128 different stages, same as the modern grids 
For note entry, you could have it be something that is done with norns and encoders (and be able to map to a midi controller) or have it be on a secondary interface on the grid which appears with some sort of knob turn or button press on the norns
Of course it could definitely get more complex from there…programmable gate patterns, more fine grained probability than “coin flip”, midi/crow sync.
