Woohooo! I just discovered that Cubase 8 does live mapping of per-note MIDI channels to VST note expression!!! I’ve been waiting for this for years!
Just turn on the ‘Channel Rotation’ option and your LinnStrument, Eigenharp, Continuum, Seaboard, SoundPlane, … gets real time access to the per-note expression capabilities of any VST3 instrument that supports it.
Obviously you can also record and still edit and fine tune it later in the excellent per-note key editor of Cubase!