That's an interesting idea. We've had a couple of requests to expand the format to include a mapping function between the CC/NRPN values and the 'display' values, e.g. [0, 127] -> [-10, 10], for cases where the relationship is nonlinear. This wouldn't guarantee normalization of meaning (it wouldn't encode the difference between the SH-101's attack and the Bass Station 2's attack), but it would make it easier to pull everything together in an app.