Sorry, but I have point out that anyone who takes on the JLA and who is NOT expecting changes mandated by an external story is surely being short sighted at best.
I'm genuinely sorry McDuffie isn't enjoying his run, but he can hardly be surprised at goings on, with so many other cross title events happening. It's unfortunate timing (since such things have peaks and troughs), but part of the challenge of the title I'd say.
I had the same feeling when Devin Grayson mentioned how annoyed she'd been when her Nightwing run was interrupted by Bat-events, or Titan issues. Irritating certainly, but surely, based on the previous five years of the title, and knowing that Dick was a member of the Batclan, AND leader of the Titans, she HAD to know that that would happen when she took the job on?