I just bought a Roland DP-8 with support for continuous data support, thinking about using it with Garritan Steinway. I soon realized that my Novation Remote SL doesn't support half-pedaling so plugging DP-8 (even in continuous-mode switched on in the pedal) didn't output continuous sustain-data.

Is half-pedaling something that doesn't work with normal sustain-pedal inputs? If so, would it be possible to have an option in Steinway interface to reconfigure sustain-input-CC so that I could use for example expression channel to control half-pedaling? This way midi controllers that don't support half-pedaling could use expression port to control half-pedal with a proper continuous-data pedal (like DP-8). Or is there some way to achieve this some other way?