I really like this idea. Chances for any new features are unfortunately very low. But this would be possible by preparing all changes of the sound manually. You basically have a sound and use the parameter locks and slides, to morph between different timbres/sounds.
Keep in mind that some parameters don’t allow a smooth change, for example: A4 cannot blend from one Filter mode into another. (SEM Filter could do this, and just a few others).
But it’s actually possible to do, just very much work. Hopefully this idea will find its way into future products. If the OT could use scenes with MIDI CCs, you could slide between different sounds on any synth, with the fader of the Octatrack.