Personally, I would be more worried about being accuracy-conscious with the static hero, which should look like it walked off the film’s set. For the FX version, which is essentially the basis for a high-end toy, I think it’s less worrisome.
And, at the end of the day, these minor tweaks are what only the most hardcore and anal-retentive prop-nerds would care about. I look forward to my eventual Gen 1 FX build, and see no need to sweat the small (0.25mm) stuff. As it is, the MoM is probably the single most impressive replica I’ve seen in terms of accuracy, presentation, and features/options. A few near-microscopic tweaks for the next batch—which no one would notice without being told about them—ain’t a big deal.