If they can just fucking get Wanda out of this without becoming evil and killing everybody I'll be happy no matter how shitty it is.
Fans of every other superhero react to them starring in their own show by being happy and excited. Scarlet Witch fans just cringe and bite their nails and pray and avoid the endless "WANDA GOES CRAZY AND CREATES MUTANTS!" tweets.
I really do believe that the creators aren't lying when they say they don't want to ruin her. I also think they are aware of how famous House of M is and that they're going to tease Wanda being crazy/evil until the last possible moment.
Maybe Wanda's fans will be able to enjoy it when it's over, but not one moment before.
Admittedly Vision fans have it worse because Wanda fans at least know she lives through it.