A Unimesh will not be the reason to remove seams, from what I know it has nothing to do with texturing. seams depend on how the figure is mapped, so this rather would be a remapping that could fix seams. Also I do not believe that a upgrade in poser setup room to unimesh would influence the use of non unimesh figures they will keep on working just as they did before. As far as I understand they mainly try figuring out building a unimesh poser figure using "single skin" ( Was mentioned by Nerd ), naturally it takes time if the staff is still learning them selves all the single skin functions, like I mentioned there are not many that ever started using that feature in poser jet so it is a large learning path for the ones who are starting now.