Have you considered checking to see if it has an entry on TVTropes?
No, really. It's not a good place to go if you're trying to avoid spoilers (though, neither are reviews) and there's a lot of issues with parts of the userbase, but in my experience it's a good place to find out if a given canon is going to do narrative stuff that I'm interested in.
Re: Aaarrggh
No, really. It's not a good place to go if you're trying to avoid spoilers (though, neither are reviews) and there's a lot of issues with parts of the userbase, but in my experience it's a good place to find out if a given canon is going to do narrative stuff that I'm interested in.