I like to see things from every possible angle. I could see Robinson's artcraft telling us why what we've seen is close to what we will get, but I hope it's something like you're speculating on. Personally I can see a number of simple ways to do this better than what we've seen so far so I'm more optimistic Once beta is 2 months in, that's when it's time to start getting vocal despite the fact I'm personally uncertain it has ever made a single difference in the slightest.
Sindorei males being bulkier could have been Blizzard's own decision. Worgen males were I think definitely intended to be updated to their current look long before the 21 days or so of beta forum arguments we had about the issue of "feral worgen" went down in between beta's launch and the new model's patched in beta release, I don't think Worgen female came from complaints either. The original Worgen male and female were clearly despite your opinion over their aesthetic design a generation apart in model and animation fidelity. I think aesthetic preferences are blinding some people to that disparity. Even though despite female worgens model generation being a step forward it had lots of sloppy loose ends in the animation and arguably questionable design fundamentals.
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If it is, I think the saving grace will be the aforementioned and confirmed expanded customization being patched in later in WOD's life cycle.