@Mattziii
This is an interesting idea and I can see how it could help some workflows with DCA spills as you say, but I don’t think we’d ever add this.
The reason being that although DCA’s are often described (even by us) as remote controls for faders, both channel faders and the DCA faders are actually controlling a gain element.
[DCA = Digitally Controlled Amplifier, where the digital control is generally a fader and the amplifier is a gain stage in the core.]
A MIDI channel strip fader on the other hand, just sends out CC control messages via USB and over the network.
MIDI is control only, there is no amplification because there is no audio, a MIDI fader is not controlling anything in the core and so there is nothing for the DCA to control in parallel.
Therefore, even if you did assign a MIDI channel strip to a DCA (and have it show when spilling), the DCA master would have no effect on it, which could be very confusing.
Thanks,
Keith.