It seems that you recently changed it to min 50. i guess for recent years that’s okay as there are more reviews given to current songs, but for years before 2010, 25 rankings was great. I was discovering a lot of music that way.
If you go to the best songs of 2007 acc to users, there are only like 25 songs above a score of 80, which is ridiculously low
A better suggestion would be to be able to filter by number of reviews like in the critics albums lists