PNSO and Theropod Lips

[Lynx]

I noticed in one of PNSOs older figures, the Yangchuanosaurus, has lips. As most here likely know, PNSO is notorious for not including lips in their theropods, but this older release has them. I am curious about what influenced PNSO to change to lipless figures, and if any other old figures have lips.

[Bread]

PNSO's Museum Line Giganotosaurus has lips.

However, I gotta say, I'd rather the models have no lips compared to the amount of shrink wrapping these models used to have.

[postsaurischian]

I hope REBOR's Tyrannosaurus (whose version with lips seems to have been sold much better) works as a trendsetter here.

[SRF]

While PNSO's choice to not include lips is an odd one, at least they have substantiated their choices on the matter quite well, especially in the videos they've made on the creation of Winter Wilson. It's clear that these choices affect all carnivorous dinosaur figures that PNSO has designed ever since.