Well, on the notion of 4.5 being for games that are broken and un-fun...I don't totally agree. I think a 4.5 should be a game that's a little below average - it could possibly be fun for someone out there who really loves the genre....otherwise what's a 3? REALLY broken and unfun? What's a 1? Worse than murder?
But that's just what I think should be...the reality is that most reviews skew above the 5/10 mark rather than averaging around it, so yeah, a 4.5 is way below average.
I also think all these 100-point rating scales are excessive. IGN had to go out of its way to explain why Metroid Prime 3 gets a lower score than Metroid Prime, even though they seemed to like it just as much or more. They wouldn't have to do that if the scores were both 5/5 or 9/10, but when there are 100 points to be awarded, things start to get messed up.
