Re: New Avengers & Ronin...I thought when it was first revealed he/she was really Echo that Bendis had changed that after fans had already guessed his big surprise a very long way out. Those preview pages, where it's hard to avoid thinking he is calling every fan who took a guess at the mystery an idiot, do confirm in my eyes that making Echo Ronin was about the only thing he think of that the fans hadn't already covered: To me they read as an afterthought explanation rather than a really logical one (one that could that have been provided when she was first 'revealed' if this had truly been the grand plan all along)
And though I know they have said there's no way they can change things like that I think that's rubbish too: The original death of Jean Grey stands as an example of a major plot change being made within few weeks of the final book being published, so when Bendis had over a year from the initial announcement of this new 'Ronin' to think of something else, that excuse doesn't wash at all.
On that Civil War final panel...what is that, a spaceship or something?