You know, while a 5E OGL would be nice to have, there's a lot we can do already with the existing OGL.
Look at the statblock of a 5E monster, for instance; it's very close to a 3E statblock. If Wizards doesn't make the Monster Manual open content, it should be possible to create an "OGL Bestiary" with conversions of monsters from the original SRD. As long as you don't directly copy the text of the 5E Monster Manual, and don't duplicate monster stats down to the last hit point, your only concern would be avoiding any 5E-specific terminology--and there is virtually nothing that is 5E-specific terminology. Wizards went out of their way to reuse mechanic names from earlier editions, even when the mechanics themselves had changed.
Then release the "OGL Bestiary" as open content, and anyone can use it freely to create adventures or what have you.
It'd be tougher to create 5E splatbooks, of course. But I bet it could be done.
Look at the statblock of a 5E monster, for instance; it's very close to a 3E statblock. If Wizards doesn't make the Monster Manual open content, it should be possible to create an "OGL Bestiary" with conversions of monsters from the original SRD. As long as you don't directly copy the text of the 5E Monster Manual, and don't duplicate monster stats down to the last hit point, your only concern would be avoiding any 5E-specific terminology--and there is virtually nothing that is 5E-specific terminology. Wizards went out of their way to reuse mechanic names from earlier editions, even when the mechanics themselves had changed.
Then release the "OGL Bestiary" as open content, and anyone can use it freely to create adventures or what have you.
It'd be tougher to create 5E splatbooks, of course. But I bet it could be done.