This is actually an interesting scenario. It's funny how some of you are so against it, which actually validates the idea in a way. This guy is a social parasite right now. Think about that in a wrestling sense. He is a real life heel. He would be presented as such by WWE. I'm sure plenty of people have said thiese words "man would I love to see that dude get his ass kicked!" Well here comes WWE to possibly grant that request!
Personally, I'm not a Kanye fan as I'm not big into rap music or popular culture for that matter. However, I'd like to address the point before about Tyson not being liked but being respected. It's the same with Kanye, people think he's a jerk, and have thought it for years (this is the same guy who said George Bush hates black people, who said he's the biggest star in history, etc.), and despite what he's said, he is still well thought of in the rap community for his ability to rhyme. In the same mold as Tyson who had troubles that were more than running his mouth, he was still good at a craft.
As for how that factors into this decision, the guest host thing has been going on for a while and it's hit and miss. Some hosts have been great, others have not. Overall though, it has boosted ratings a tiny bit. Nothing drastic, save for the Shaq show, but little improvements in overall viewership. However, the guest hosts have been plugging movies, books, whatever projects they are doing and that in a sense is the reason they are there, similar to a late night talk show appearance. However, in this case, Kanye wouldn't actually be promoting, he would be there simply to get involved. And the WWE would want him because for the first time in a while, they'd be capitalizing on a current, popular news story, and bringing it to life on their show.
Let me just say this, if the Kanye segment replaced the Chavo/Hornswoggle segments, can you honestly tell me that's not a step in the right direction? I say give it a chance. Kanye is a big name these days and could actually spark interest in the product. If the show is done well around him, people might actually find a quality television product and start to tune in. Getting him might help more than any guest host. We'll see though.