This is definitely good news. It's not as far as I would go in terms of universal vacatur and other nationwide injunctions, but it's a huge step in the right direction. I would argue that nationwide injunctions against the federal executive branch should generally require the approval of SCOTUS.
Considering Chief Justice Roberts is head of the Judicial Conference, I think we can start writing Chevron's obituary. There's a good chance he's writing the decision himself and he might even reference what the Judicial Conference has now done.
Yes, I would say “only SCOTUS can issue a nationwide injunction that applies beyond one district/circuit” is where this ultimately ends?