I don't disagree! But, unless/until MAC_T or someone else decides to share their take on Tracy, I'll keep working with the one I have. To date, AFAIK I'm the only one that has shared a Tracy model in the DoD Art Assets thread. Others have shared very nice versions of Mom and Alice, both of which I utilize every now and then in my fan art efforts.
I'll be the first to point out that I'm not the most skilled modeler in the fan art biz. There are others that seem to be better at this, and that are more attuned to finding/spotting those tiny nuances that really dial in a model. But I do at least try to help get the ball rolling here and there, in the hopes that it'll inspire others to come up with, and share, better versions.
MAC_T and lexx228, as far as I can tell, have both done a bit more work with Tracy's skin tones than I have, which factors into this. Skin building/tweaking isn't my area of expertise.
So, not offended at all by your observation.
Hopefully someone will pick up (and/or share) from where I've currently left off with Tracy's model. In the meantime, I've 'locked in' the version I'm using for my fan art crossover story, 'cuz it needs to get done sometime, and the club renders take a really long time, even though I'm bailing LOOOONG before they hit 100% convergance/after an hour or more of dual 1080 crunching. My 'practical' goal has been 2000 iterations minimum which probably means a slight loss in render quality, but you pick your battles...
BTW, those subtle differences that I mentioned r.e. Tracy are one reason why I refer to her as Trace in my crossover fan fic, not Tracy. She's not the same, although she's fairly close to identical.