Psion
Adventurer
The Sigil said:Best Rules Supplement
Best Monster Supplement
Best Aid or Accessory
These three seem so intermarried... perhaps combine them a bit into "Best Player-Focused Supplement" and "Best GM-focused Supplement?"
I think you really need to look at what the category means and/or past winners. Best aid or accessory is a WHOLLY different category than supplement.
Monster supplement is largely a d20 specific phenom, but we will see how it goes. Several of your suggestions are along the lines of combining categories. I see no reason to do that so long as the competition is viable in each category. However, we are considering putting a disclaimer about the possibility that categories will be combined if we don't get enough entrants, letting us ensure that all categories are viable.
Best Non-Open Gaming Product
Should go. The ENnies were originally conceived as a tightly-focused set of awards for the Open-Gaming Industry. I see no reason to change that.
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This I don't like. The ENnies were not conceived as another "Origins" awards.
I think you should rest easy in that this will never be the origins awards. There are many things Origins cover that we can't or don't want to cover. But GenCon is about more than D&D. However, I think that no matter what we add, we will retain a focus on open gaming
It gets a bit tougher when you talk about stuff that is a mix of new and old (e.g., Green Ronin's Book of Fiends). There is new material that is viable and fresh in that book and that should be eligible... but much more material is reprinted. And I expect we'll see more of this type of thing as time goes on, so it's best to tackle the problem now. Some sort of "line in the sand" needs to be drawn; even though it may be hard to adjudicate, that's why we have judges. For myself, I would suggest that the line be drawn somewhere in the "75/25%" neighborhood... if you have previously published more than 25% of the material contained in a re-release/revision, the work is not eligible. While this (regrettably) excludes the Book of Fiends from consideration, I don't think it's necessarily unfair. About 2/3 of the book is re-release (and as I recall, Legions of Hell and Armies of the Abyss did pretty well garnering ENnies nominations); it's not fair to other publishers to award the same material twice in different years.
Now you are onto the type of discussions we are having in the judges forum.
At any rate, let me ask you this. Book of fiends is an excellent test case. It does, as you state, have a lot of reprinted material. However, if Hordes of Gehenna were published alone, would it not be worthy of being considered? While I do think we have to draw the line somewhere, I think requiring a majority new material may be a bit much when there's enough for a whole separate product in there.