+1 but Popularity Ranking (and others) could already be subdivided by genre, although not PS Ranking, that will do for the meantime.
As a reader I'd like to have the bookmark function first lol.
And tbh I'd rather have Hall of Honors in each book details and book badges. Should be a great help in improving all authors spirit.
Anw, I could already see a year ago suggestions being implemented so I'm sure these stuff are already in their mind. We'll just have to wait.