Mmm. It seems to me that as you're not doing actually any mixing on the console, similar results could be had by simply running the final stereo mix through a nice analogue preamp. And of course if you also run it through an eq and a compressor, you're basically mastering the track.
I've got a cheap Behringer tube preamp I use when recording acoustic guitar, I could try and run a finished mix through that and see if it helps "de-digitalize" it!