Hmm, can I flip the tables around?
Gamers will realize a game just isn't to their tastes and will just let it be, instead of going onto every forum and review site to rage, trash talk and 1/10 rate bomb it.
Oh, gaming reviews - they would shrink to a 5-star system (Don't buy, you'll probably dislike it, average, good, really good) instead of the /10 or /100 system which is ambiguous at best. That way instead of the current trend of <75% score being crap, it'll get translated as a 3/5 which makes the title still viable for playing.
Publishers will not offer bonuses to studios based on metacritic rankings.
Instead of arguing which platform is better, people will just go "Oh, the PlayBox 1024 fits your needs and exclusives while the X-Station 5 does the same for me. That's cool."
Publisher PR/marketing departments won't over hype a game and/or lie about features.
Gamers won't treat news from developers as if they were trying to hide something and start projecting outrageous conspiracy theories about what is REALLY happening.
Similarly, studios would be more upfront about what's going on (i.e. delays).
And gamers would be more accepting of such news.
Gamers will realize the huge gap in what they think goes on in development vs. how it really is like, and will stop talking like they know better.