Well, my initial goal was to get a good selection of outfits from the base game converted to the various sizes first. After that I may move on to some of the better ones from the expansion packs, but other than a few specific requests, I really don't plan to do much with other people's custom meshes... there are just too many, and to make a version for every size, I would be making meshes for the next 50 years.
However, once I get my initial set finished in all sizes, I do plan to release my Poser magnet sets that I use to create the various shapes... creators who own Poser can then use those to modify any meshes they like, and they will match up to my sizes exactly. I leave that up to others though, I can only do so much
