Ulthwithian
First Post
Well, the question as to whether it could be done in one book depends entirely, not on the breadth of the book, but its depth. If when you are looking at the book in a bookstore/game store/wherever, and you see that 100% of the pages (or perhaps a more realistic 80%) are useful, that is a measure of the overall utility of the book. If OTOH you find that the useful page percentage is ~40% or less, that gives a rather different picture.
End question: Does WotC have 500+ pages of material to write regarding Dragons? If so, then they have to split it up. (At a certain point, you have to take into account book life expectancy, and a 500 page book must be handled more carefully than 2 250 page books.) If they have to split it up, then you have to figure out a rubric. 3.X apparently used setting/'other' material to determine the split (or they developed the material piecemeal). 4E is splitting it up a different way. Presumably, DracoII will follow the format of DracoI which would certainly help in basing a decision to buy DracoII off of the information found in DracoI.
End question: Does WotC have 500+ pages of material to write regarding Dragons? If so, then they have to split it up. (At a certain point, you have to take into account book life expectancy, and a 500 page book must be handled more carefully than 2 250 page books.) If they have to split it up, then you have to figure out a rubric. 3.X apparently used setting/'other' material to determine the split (or they developed the material piecemeal). 4E is splitting it up a different way. Presumably, DracoII will follow the format of DracoI which would certainly help in basing a decision to buy DracoII off of the information found in DracoI.