It's hard to answer questions like this without dealing with a few salient issues that are seemingly unique to my role as both artist and community member, like an oft-occurring confusion as to whether I'm a PDS employee or not (I'm not), and whether anything I say is or should be taken as "official" or not (Generally it shouldn't).
That being said, my answer, without any commitment or 'officiality' to it is; Of course. If I came into "Powerball Money" tomorrow and could devote my entire free time to it I'd probably redo a lot of them. I'd love to have a way to incorporate ethnicity and inheritability into a unified system; to have a dual system of hairstyling on both a universal and culturally-specific ruleset; to have proper (multiple) distinct species systems (for fantasy mods), and to have a dynamic clothing system based on a multi-layered approach combining universal sets, culturally-specific sets, wealth-based displays, sumptuary and vestimentary laws/rules, and title-specific parts, all influenced by timed introductions of features of dress (French influence on English courts in the 12th century, or foreign Levantine visitors bringing Eastern styles to Andalusia, or the introduction and then dismissal of Turbans in favor of the woolen ghifara in Andalusia through the tenure of the Almoravid/Almohad rulers, etc.)
To give a rather extreme example, imagine a Malian father and a Finnish mother. Their kid would have a mix of features (since my ideal system would have every possible "piece" rendering uniformly in a range of shades) both African and European with a middle skin tone. Over time, depending on the breeding, such a character's dependents would gravitate towards one way or another, maybe adopting traits of the local population to assimilate (and so on). Maybe this same character somehow becomes a claimant to a Byzantine rump state based in the southern Balkans, and has some significant wealth from his Malian father. So, maybe he has the "T-Tunic" collar and vertical panels with embroidered pearls of a Byzantine-style Balkan ruler, and is rich enough to afford a Tyrian Purple chlamys with brocade and paneled lozenges as a challenger to traditional Byzantine rule. But, he's not rich enough to go "full Byzzie" and has a simpler imitation crown with smaller pendilia and less ornate jewel- and goldwork. (I hope this illustrates what I mean).