I would love to see the pluggins opened to users. I would wait a bit till better users have vetted it. however, I would surely buy it at any reasonable price I could afford.

Also I would like to point out to you that you will be opening up yourself to a flood of support questions from users. And not just the really good questions or possible bug reports, but also the newbie playing with advanced toy questions. The LBGUI thread comes to mind.