As said in another topic, I think this can have its own thread.
Now that OGL selfinflicted chaos seems settled (a portion of the community seems to think that they can renew their intentions after the movie has it’s time at theathers), maybe we can explore options as though experiment .
5E have a CC-BY SRD now, but probably 5E will cease to be supported by Wizards sooner than later, specially if the Executives that wanted Menoth knows what are still there with a spirit of revenge after being forced to CC the SRD.
OGL will probably be litigated or in a unstable position, now that everyone gained a Read Mind spell and the intentions of Wizards and Hasbro become public and crystal clear.
We don’t know a lot about PP’s position, other than the saying-not-saying post back in the day. Even Critical Role, who we know are absolutely tied by contracts, were more clear (if only because we could see their faces when asked). But we can interfere they were not jumping and dancing of joy.
Now we have:
Possibility to build a player’s guide that replace 5E players guide, using CC (not OGL please), not opening any of that. There is a lot of stuff in DnD players guide that is not in yje SRD, so there is work to do here.
Possibility to pick a 5E-compatible project with enough traction to be popular, and build a Player’s Guide from there. Kobold’s Press "Core Fantasy Roleplaying " (Project Black Flag until few days ago) seems to be the main contender here, Cubicle7 is also developing a ruleset.
Probably this means going ORC as license, this means opening all mechanical concepts for others to use (not the IP).
Then, there is the 2D6 ruleset, with his share of fans. Opening it under ORC should be as easy as putting the notice and, taaadaaaa, all mechanics are open for anyone to use and make their own games using the mechanics there (not the IP and copyrightable material).
I think a “Core Fantasy Roleplaying” own book, with PP production values and choosing the set of rules and options that they think better fit the world would be an extra top thing to have (even if some info is repeated in the Requiem Guide), but probably the majority of current 5E fanbase is ultrahappy with the resolution of the OGL thing, and see no reason for further changes after winning that battle.