....would be nice if you could store your mix in the DAW (in this case capture) & it would play back all your fader movement & effects automation through the mixer......
This is happening now and has been for a while. I have had this communication between a Yamaha digital mixer and Studio One software. Through midi, the mixer will transmit all its moves and these can be easily recorded and editing in a DAW program. Playback of this data will move the mixer faders around and take control of your digital mixer.
When the software and digital mixer however are tightly integrated such as in the Presonus case
(and perhaps in Yamaha/Steinberg) then it can go further. Such as the DSP horsepower in the mixer appears as plugins within the software. It is like having a giant UAD card on tap. Very cool. Not using your computer CPU but the mixer's instead. These mixers feature massive
(emulated but very very well emulated) analog channels too which can all be routed within your DAW.
Digital mixers also allow for zero latency monitoring during recording with effects being heard/recorded etc something a DAW cannot do alone. They are cost effective too. Look at the price of the new Presonus 32 channel digital mixer and compare that to a a control surface, an expensive interface and 32 Mic Pres and a stack of great sounding plugins!
Also the controls on the surface of the mixer can easily talk the software as well.
Another thing I am finding, it is better to not mix everything within a DAW either. I get a better sound when I reduce a mix down to 4 or 8 stereo busses and send them to a digital mixer and combine them there instead. I don't know why it is but it definitely sounds better than doing it all inside your DAW. It shouldn't you know because yes it is all digital but for some unexplainable reason it sounds better being summed in the mixer. Being able to manually ride busses is cool too.