Yes, a book of spells may be 50% OGC but if that 50% is the spells and there is no provision for use of the spell names (either by declaring them OGC or including a "goodie license") that is equivalent to 0% OGC for me.
Uh... Why? [/B]
Because if I have to change the name, what good does it do? IMO, reusing OGC serves two purposes: (1) it lets me use stuff I like and (2) it's a "free plug" for the product I pulled it from.
Of course I can use the stuff, but I can't give the original product a "free plug." Maybe it's me, but if I find something useful, I want to refer the reader of my stuff back to the original.
Perhaps a concrete example will help:
In the orignial "Bob's Spells and Stuff by ABC Publishers" we find:
Bob's Spell of Magnificent Twinkness (PI)
Description: blah blah blah (OGC)
Now, if I want to use this, what do I do? I have to do:
Some other Name of Spell
Description: Blah Blah Blah
and in my section 15 I have a reference to
Bob's Spells and Stuff by ABC Publishers.
Somebody reads my book, likes it, and wonders what I used from Bob's Spells and Stuff... he figures it must be a spell, but when he looks in the index of BS&S, he doesn't see "Some other Name of Spell" and thus can't reference the original.
It simply makes the reference largely useless.
Or more poignantly, what happens when people try to look up "Sword" in the PHB and can't find it (because it's "Mordenkainen's Sword" there). Without the ability to cross-reference and easily trace the "line of derivation", the Section 15 becomes mostly for show and has little practical use.
It boils down to, "why don't you want me to refer other people to your product? It's free advertising!!!" I guess I just don't understand that one.
--The Sigil