If someone in the community does some texture work I could see the heads working, their largest problem is the aforementioned Hero Forge plastic vibe, but most of the body parts simply don't fit mesh-wise with vanilla assets. It'd be neat to do a playthrough of the original campaigns with them, but I think it'll be a minute before the pack has practical applications for PW players.
Also, replacing the black void of certain helms with skin and eyes is incredibly uncanny to me after all these years.