> With the exception of some copyrighted monster names, it's explicitly not a violation under the OGL, and the ability to do so is a large part of the point of the OGL.

I'm talking about copyright, not OGL.

> You can't by name without a separate compatibility license, typically by way of publishing to the Dungeon Master's Guild, which is laden with a lot of other intellectual ownership gotchas.

Says who? WotC doesn't decide the law. They can claim it's illegal, just like Apple can claim it's illegal to jailbreak an iPhone, but that doesn't make it law.

Just like the Harry Potter Encyclopedia can refer to Harry Potter characters without a license, an adventure should be able to refer to entries in the PHB or Monster Manual, as long as it doesn't directly copy significant amounts of text.

> If you can describe what "neutral good" or an "Armor Class" represents mechanically without resorting to a literal mechanical description in the SRD or covered by the OGL

My point is that I don't want to and don't have to. It's already described in another book that I expect people to own.