I would really like a half star rating system. I’ve been using Letterboxd for awhile and have come to love the system that they use. It keeps the whole rating right in front of your eyes (as opposed to a full 10 point system) and keeps the rating simple to understand. There are many games where I know that I don’t want them at a full 4 stars, but I think that they deserve more than 3 stars.
I just think that a half star system is the perfect balance of having precision while still keeping the system simple.