Nother thing I'm curious about is the Hackmaster products. Does anyone know what the story is with those? Are the minor differences really considered meaningful enough for them to escape legal action? Did Wizards grant them the right to do those? (I know K&K has a business tie to
WotC via Kalamar, but I'm thinking that came after Hackmaster)
In a similar vein, I'm also curious if anyone know how the d20/OGL relates to earler editions of AD&D/D&D. Can indie publishers make d20-type material using earlier rules versions if they follow the
OGL agreement? Or are older rule sets totally verboten? Or completely open?