Sadly this seems like a trend that'd been going on for a while now. From what ive heard the biggest comic cons have turned into basically a showcase for all kinds of pop media and the actual comic books seem to have taken the back seat. I remember when i used to subscribe to wizard. Slowly it started turning into a magazine about toys, shows and all kinds of other stuff based off pop media. I remember when they finally decided to pull out the price guide from their magazine, i called them and cancelled my subscription.
Havent been to a show since i was a kid but i definitely wanna check out the upcoming LA Comic Con. I just hope i run into more authors/artist and booths with books than full grown men and women dressed like fairy's and super mario or something.