It is not free many times over, beside purchasing a copy of the UTC you also need to purchase addons for the models you want to use it with.
Besides, it would be nice to create one texture and be able to offer it for use on Posettes as well at the others. At the moment it is possible to create a single textures map and have it work on V3, SP3, Laura YT, Laura PT, Maddie, A3, The GIRL, MDP F202, Mayadoll, M3, D3 H3, Luke YT, Luke PT, and Matt. I it would be nice to be able to show what Posettes can do with the same textures. I know that some of those are Guy too. I have used V3 textures on M3, Textures without makeup that is.
For varity of characters I like the sound of Stahlratte's plan.