I use fresh whole goat's milk as all the liquid content. I just bought a cream separator, and after reading how some of you add cream at trace, I will now try to separate, use whole milk as the first part of the liquid and add more cream at trace. I'll report back in a few weeks!
I didn't realize you could add proteins at trace. I would worry about it going rancid, but I'll give it a shot.
In trying my samples over the past few months, I also think those with a tablespoon of honey (5 lb recipe) at trace are creamier, too.