I, for one, don't really like "jack-of-all-genres" critics. In my opinion, things should be criticized mostly within their own genre. I don't want to read a review of Drunken Master by a critic that is not tuned into the finesses of the genre, nor do I want to read complaints about how ridiculous the plot is, how shallow the characters are etc. Those are not the things I'm looking for in that genre, although if by some miracle they happen to be present, I won't object.
The same goes for game reviews. Each game should be primarily reviewed by an expert on the genre in question. It's also always a plus if you get in opinions from other reviewers from the other side of the fence, but the majority should come from the expert. That way seasoned gamers can distinguish games that interest them from the rest, and those new to gaming can get a glimpse of how they might experience the game.
Going on a slight side track, the notion that everybody has an opinion and all are just as valid is wrong. For the majority of the people, that's how things are, but there are people that, simply put, have better opinions than the rest. Those are the people who set trends, people whose work is admired by the masses. For an enlighting essay on the subject of taste, please read Taste for Makers.
