I’m currently trying to use my roli seaboard M to control a monophonic eurorack synth (not MPE capable). This is proving to be a real headache and is making me think I should probably stick with ableton live…
I’ve somehow managed to get it to collapse everything down to one MIDI channel, and I’ve been able to map the vertical CC output of my roli to the modwheel (CC1) output in cubase. However, another thing that I did in ableton that was really easy, was reshape this MIDI CC output so that the minimum value was remapped to about the halfway point, and then there was a curve towards the maximum value. This meant that even if I hit the bottom of my roli, it still exported CC as though the ‘modwheel’ was halfway, and then as I shifted further up the key it resulted in less and less CC change until it reached the maximum value. This is essential for my current patch, and thus I’m wondering if there’s a way I can achieve a similar effect in cubase?
I was lead to believe cubase was superior with regards to midi, but I’ve been at this rather basic problem for 2 hours now and I can’t find anything….
“Superior” is relative. I would just say “different,” not “superior” and then focus on process instead of comparative analysis. Well, that’s not true - I have an opinion, but that’s a different thread 
When you say “map the vertical CC output of my roli to the modwheel (CC1)” do you mean that you used the ROLI Dashboard to set the M into Single Channel mode and you changed the “Slide CC” to 1? I think that’s probably your best bet as there’s no built-in “MPE Control” equivalent in Cubendo (though MPE Control doesn’t use CC1 by default anyway).
Then you can just change the Slide sensitivity directly in the ROLI Dashboard to filter the CC1 values before they even get into Cubase.
If you’ve done something else that you’re happy with and are now at the point that you’ve got your CC1 data output going to your synth, then the “Transformer” MIDI Insert may be what you’re looking for. That can filter/remap MIDI output based on Filter Targets that execute Event Transform Actions based on a selected “Action List” (presumably “Transform” in your case).
Make sure that in your Inspector “Set up Sections” (right click in Inspector) you’ve got MIDI Inserts checked, and then add in Transformer. It took me a wee getting used to it when I first used it, but it’s a capable tool.
Even with the Slide sensitivity set, you’ll probably want to check out Transform anyway to get more granular control over what you want to do.
