The reason I say it is useless to me is this: As a content creator, I would make very few, if any, sales for items which would require a separate program (plugin so to speak). To further hinder sales, is the fact of the proprietary file format. It may have it's uses for some folks and it's awesome that you find it useful, but I'm not willing to shell out $1000 for any proprietary software which has such limitations in the scope of profitability. As a 3D modeler, I may as well create my own figures. Much more profitability in that as time consuming as it may be. If I was an animator or illustrator and made my money from video production or magazine cover design etc etc, I might reconsider, but that's not what I do :)