IMO, this is great news.
I'll give major credit for this development to Mary-Kate and Ashley Olsen, for having the brilliant insight to sue Ack-lame over the fact that every one of their MK&A games sucked. Who'd have thunk that all those crappy games might one day save the industry? Not me, that's for sure.
IMO, this'll probably cause some hardship as it shakes up the industry (assuming it catches on), but better games can only be a good thing.
My only complaint is that I already think too many people pay too much attention to a review's "score number", and not enough attention to what the actual review says, but every licensor can come up with their own system to gauge the quality (now that they know that maybe it's a good idea), and I'm sure that some of them will put more "judgement" into their systems, like some of them might actually read some of the reviews, or (heaven forbid) they might actually play the games.
BTW, does anyone else find it funny that Nintendo tried to put similar "quality control" measures into place, way back in the NES days, but third parties weaseled out of the situation by courting Sega, until they dumped Nintendo for Sony (who by most accounts is even more oppressive now than Nintendo ever was)?