Be wary of invoking the "dressage gods." They've allowed the Names to rollkur their horses without penalty for a long time. And that is the tip of an iceberg they'd probably not want to get a spotlight on.
The TWH world had been divorced from the USEF world since the late '60s or early '70s. The quest for the Big Lick was the reason for the "divorce" if memory serves. I don't see USEF getting involved; they took their dog out of this fight a long time ago.
Pressing the reintroduction of the Federal legislation to amend the HPA is probably the best thing that can happen at this point. And, of course, the continuing slow implosion of the BL world.
That, however, just sets the stage for Round 2: the addressing of soring of the flat shod/light shod world.