I mention these things mainly for those who are considering commercial products. ODF's already said he's adding the extra channels, so that's covered. Hopefully vendors who work primarily in Poser will use them for products they put up for sale.

But even for the freebies makers, a little compatibility is a nice touch. When I do something that includes textures (and I'm not a vendor, so all of mine are freebies), I use a script in DS to convert the textures to pz2, then open them in Poser and tweak them. My settings are probably not ideal since I don't use Poser on a regular basis, but I do make an effort even still. I even go back after I've tweaked them to convert the MAT files created by P6 back to pz2s so those with earlier versions can use them. There's probably a way to make it save as pz2 (maybe a python script...lol), but I don't know how, so I do it in a text editor.