But it is true though, some fans have already decided that the story is going to suck and refuse to even consider that it might be good. It is unfair to everyone who is involved in the process like the writers, artists, and yes even the publisher and the editors. But marvel knows this now and are not afraid to bring it up, if some consumers can constant bring up how bad is going to be in every forum and everywhere else then talk about it then sorry they have a right to bring it up as well and even make a joke about it. About the panel itself come on they have been there since the comic con started dealing with panel after panel and thousands of fans you expect them to be alert and not a little bit tired. Sorry but to me that is a little unfair. That is just my opinion though.
It comes with the territory. I'm supposed to give them a pass on a poor attitude because they might be sick of trying to sell me on their products? Having to be on the floor and answer questions is part of being a creator, with only a few exceptions (writers like PAD, Bendis and CC do press and appearances but have garnered enough influence that its unlikely they'll be as pressured).
So when Neko got a poor response from that creator once, we should give him a break because he got asked the question or questions like it before. Cmon now. They're paid to sell books. Answering to the public is part of a convention... It's like 90% of the purpose of a convention.
As for not liking something before it comes out... If its an issue, stop putting out solicits months in advance with book synopsis. It's our right as consumers to pass judgement on something that's presented to us. Microsoft learned that the hard way with the Xbox One. That thing lost thousands or millions of potential sales months before it even debuted thanks to poor press, and lack luster advanced presentations. People got fired because of the botched launch.
We are not mandated to like something because of past track record. This is an editorial/executive issue. They OKed all of this as a whole. If they put out press and get push back on almost all of it, then its not the creators faults, they got the ok and direction to go in that direction. The whole line is moving in a specific direction, a loy of people don't like the ideas presented to them by Marvel. These guys are in a tough spot. They didn't come up with this status quo. They aren't decimating the mutants, responsible for killing 616 Wolverine and replacing him with OML and a female clone. The O5 were there far before any these guys. These guys aren't responsible for ignoring and/or relocating some the X-Men's most popular characters (pretty sure this might upset a few people). I don't envy their uphill battle. But first impressions are everything in any market of commerce.