There definitely is an improvement:
I hope DP and @XSPEEDYGUYX don't mind me providing an alternative opinion for the fix; because as I was in fact using the head model for my playthrough and also grabbed [and installed] the attachment later- I felt indebted to appreciate the topics to have at least a quick review for the effort of discussions.
The change most noticeably in-game, particularly on dialogue/cut-scenes whereas before the fix there seems to be a visible unnatural-transition around the marked areas, and after the fix there isn't.
Well, I can only say- thank you for the end-result, guys!