first of all...that's an extremely sexist comment. Second...Lore wise he is HER consort not the other way around, and she has many, he's just her favorite. She's the Queen of the Red Dragon flight and the Aspect of life. He is her consort. Consort is a gender neutral title.
Actually Christie didn't chose to kill him. Everything that happens in the stories is directed by blizzard. Micky Neilson ( [link]) who is in charge of all the books, instructed her to kill him off. Otherwise, there would have been no way to put poor alexstrasza into her deep depression. I actually asked Micky about this at Blizzcon, asking "who's idea was it to kill krasuss? He shuffled about cutely, like a nervious child and meankly said " don't kill me.. it was me.." He then went on to explain why it had to happen and said that its possible he may somehow come back.
I follow the stuff a bit, actually I'm waiting for the expansion, but I just don't have the energy to play on retail, and I don't want to play on private servers anymore. So yeah, all I can do is check how things are going. Maybe things will change; the pandaren stuff certainly sounds refreshing after cataclysm.