As I write these lines I am running a QD from Conkelley to Kalispell in the Marias Pass. It is relatively flat terrain. I am using the HUD version.
I don´t know because I am far from an expert driving this locomotive, But I am noting some differences in the steam management. I am having problems to build steam pressure. I don´t think I experience that situation with the Sep update. But I can´t tell by sure.
I have my dampers open. My pressure keeps lowering. I have tried the blower, but my chest pressure remains low. Take a look to low is my cut-off and it´s been so for a while:
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2015-10-12_00012.jpg
I have made two runs like this one with same result. I had not this type of trouble in The Horseshoe Curve and Soldier Summit.
The smoke volume and textures are much better now but, Mike, I think I would prefer a more grayish smoke as you are planning for the final version. You can´t distinguish any difference between open and closed firebox. But again, volume and texture have been improved a lot.

EDIT:
Take a look to this other pic. Check the controls and pressure in the HUD:
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