As @Ruin Explorer pointed out, there is a lot of fantasy inspiration outside of D&D. That is what she controlled speculation based on.It seems to me that that is essentially equivalent to saying, "What archetypes would you personally fill D&D with, if you had free rein?" It is, as you say, more interesting when there is some room for speculation--but when there is too much room for it, every flight of fancy is equally fitting, no matter how outlandish.
Anything could result from it, because we're talking about changing at least the last 25 years of fiction in subtle to profound ways. Hell, for all we know, without D&D, the LotR films never even get made!