To paraphrase Hal, "Been there. Done that."
I think Morrison has been given virtually complete creative control over Hal Jordan for the foreseeable future, and I don't think he has any interest in participating in anymore events designed to temporarily boost sales, and the same goes for Johns. These guys don't need to bother with these stunts anymore. They generate more than enough sales on their own. They'll play nicely in terms of sticking within the current status quo of the shared universe that is the DCU, but neither are interested in derailing their stories for the latest event.