To me this sounds like it would have the same problem as the OGL. Even if current recepients can still use it, new recepients are blocked. And it is unclear if

To me this sounds like it would have the same problem as the OGL. Even if current recepients can still use it, new recepients are blocked. And it is unclear if a current recepient can create new derivatives or nor. If Alice grants Bob lib v1.0 under GPL v2. Bob creates Soft1 v1.0 under GPL v2 using lib v1.0. Alice then revokes the licence on lib v1.0. Bob can still distribute Soft1 v1.0 but can Bob create Soft 1 v2.0 or Soft2 using lib v1.0? Or is he considered a new recepient of lib with each derivative he creates? Can Charlie still get lib v1.0 under GPL v2 from Bob? If the last answer is yes then there is no issue with the current situation either. It would mean you can still get the SDR from anyone who already has the SDR under OGL 1.0 even if directly from WOTC you can only get it under the new license.