I'm of two minds about this.
On the one hand, it's crazy awesome to see them take something inherently this miniscule in overall effect this serious. Shows a crazy commitment to perfection and detail tbh, and is also interesting that they apparently are able to self-determine their internal resources enough to be allowed to focus on these patch-ups instead of something new.
But OTOH, that's kinda my thing with this: It is an absolutely minor thing, virtually all of these. It is also utterly and completely utopian to think that you can high-fidelity a character an make it "feel" the same as the old one. Things are going to be different: That's why we get the free Fantasia. Other games would also indicate that this is entirely impossible to achieve, personally I have been part of three MMOs that either swapped their entire rendering engine (EQ1) or their character models/engine (DAoC, WoW), and none of those ever tried to re-create the old look, DAoC instead quite intentionally went for a new aesthetic over all characters and races, entirely different from the old one. Evidence would suggest that what they're trying cannot be done, and they're wasting dev time that could go into the next rendering system improval, such as spell f/x or so.