this post is the prime example of what went wrong with the communication when sl was announced. premfaces also thought that it would mean the end of their beloved league, but it wasn't even part of the plan.
In which FIFA/UEFA competitions would we want to participate IF we already were playing in the superleague? There is no chance they would exclude star players from world cups or the euros, no matter how loud they bark.
Another point from Rantos's conclusion is that EU competition rules do not stop FIFA OR UEFA from issuing threats or sanctions against clubs. So even if clubs wanted to breakaway FIFA/UEFA and federarations could still impose sanctions or continue to scaremonger them like they have.
Is this ruling somehow unexpected? Basically says anyone can create a competition and that any competition leadership can decide who can participate in their competition.