When SciFi Channel and MGM announced that both “Stargate SG-1″ and “Stargate: Atlantis” was going to be renewed for 10th and third seasons respectively, there was a lot of cheers coming from the Stargate fandom.I was there cheering, too. But my cheering seemed a bit bittersweet.I am the kind of person that can make a day at Disney World seem like a day in hell, so I decided to keep some of my feelings to myself. I mean, for goodness sakes, the last thing I need to do is write my opinion and piss off an entire fanbase. Not that I’ve ever done it before. OK, maybe once. Twice? Fine! A dozen times.But I was holding my tongue. That is until I made my way to Necronomicon, a sci-fi literary convention right here in my hometown of Tampa, Fla. Since 2001, I’ve been a guest at the convention, one of …