I'd like to think you're overreacting and either DC just doesn't have room for what they'd consider a niche title like her (sadly realistic), and or she's reserved for the upcoming JSA book. Though the fact they keep playing coy about said JSA book is really beginning to frustrate me. And if she isn't part of the team when we get the book I will be quite mad. She was part of the team in Doomsday Clock so I expect her in the relaunch.
Though, speaking of this, what would you think if they offered Palmiotti and Conner JSA if they want to write Power Girl? They're interested in and care about at least one of the characters and we still need something.