No, I think it doesn't . And even if it does, it can use nested folders structure which helps a lot. For example, in Pose folder you can have V3 Poses folder, and inside it Sitting and inside Sitting - Sitting Sexy, Sitting Casual folders. Very handy for keeping MAT poses for one outfit but from different creators (like it's with MFD and other popular clothes), and so on. A lot of possibilities :-)
I still haven't uninstalled my PP because P5 is oh-so-slow, not only in rendering but in pretty much everything, from opening Libraries folders, to loading things, to accepting dial values or spinning dials... Until I get newer machine, I'll stuck with my outdated but fast handy user-friendly ProPack :)

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Outdated gallery over at DeviantArt

Fics at FanFiction.net and Archive of Our Own (AO3)