There's a few interesting things that jumped out at me after my first read of the document. Forgive me if someone else has pointed out these issues--it's hard to keep up.
If the intention of the document is to force creators to use the OGL 1.1 license to support OneD&D, they've left a few holes.
- The OGL 1.1 only applies to "Dungeons & Dragons content that is included in the SRD v. 5.1". As near as I can tell, there is no mention of Dungeons & Dragons in the SRD v. 5.1 beyond the identification of the term as Product Identity in the preamble.
- Only OGL 1.0(a) "is no longer an authorized license agreement."
The implications of this are interesting.
- It does not cover the use of the 3.0, 3.5, or D20 Modern SRDs, or even SRD v. 5.0 which was released shortly before version 5.1. All were released under OGL 1.0a.
Both OGL 1.0 and 1.0a have the provision that open game content distributed under one version of the license can be copied, modified and distributed under an authorized version of the license. I am not aware that anyone has attempted to de-authorize OGL 1.0.
Does this mean that people can support OneD&D with with open game content derived from previous SRD content under the OGL 1.0 license? It certainly looks like it.
However, I expect that if this oversight is obvious to me, other people will have thought of it too. WotC may have additional documents prepared to attempt to de-authorize OGL 1.0 and withdraw the release of earlier SRDs under OGL 1.0a.
The other thing is that OGL 1.1 does not address non-WotC (3rd-party) open game content distributed under OGL 1.0a. There is a lot of it out there--far more than WotC every released in their SRDs. A lot of that content is very similar to the content in SRD v. 5.1. The creators of that content retain their copyrights to that content with the only condition that it can be distributed under an authorized version of the OGL.
- Can a creator include 3rd-party OGL open game content in their content ("Your Content" in the parlance of OGL 1.1)? It's clearly not "Licensed Content", because WotC does not own the copyright.
- If such 3rd-party content is included, what does it's status become? The creator has the right to distribute it under an authorized version of the OGL (1.1 in this case), but does not have the ability to give WotC any additional rights to that content.
Of course if a creator can not include any 3rd-party open game content released under OGL 1.0 or 1.0a, this ends any virility of open game content. You can no longer build off of improvement made by others.
It also puts creators in a very difficult spot. As I mentioned before, there is a very large amount of open game content out there--how can you know that "Your Content" does not infringe someone else's copyrighted open game content? You no longer have a safe harbour related to the very complex issue of "how copyrightable is game content". And Wizards doesn't have your back--the indemnification clauses put all the burden on you.
Overall, the license is a bit of a mess and opens up more questions than it answers. Thoughts?