I find the 'rejections ' by bayern and dortmund quite interesting. This is obviously something that's been cooked up in secret. The German teams are 51% fan owned, so would presumably need to put any decision to a vote or at least subject it to fan scrutiny.
So rather than an outright rejection, I'm guessing it was the case that the German teams couldn't agree while keeping it secret from their fans and shareholders.

If this does end up being put to the fans as a proposition, I'd be very interested to see which way they vote. My heart tells me that the Dortmund fans especially will vote to tell them to f off