It makes me a bit annoyed when I find people who feature 100% of their work. I don't want anyone to take offence to this, it's just I think people should bear this in mind when they feature their writing. This is kind of a petition so you can put (sign) at the end of your comment if you want to sign it.
The reason for featuring your writing is to point out what you think is your best work. A decent amount of books to feature, I think is a maximum of 9. Otherwise it gets to cramped. There are people with, say 30 pieces of writing, which are all featured. This can increase the page size by nearly 70% if you don't already have a massive profile.
People feature all their writing because then it is more likely to be featured on the homepage. This can and has caused lots of problems. If everybody featured all of their writing then the homepage might end up with 40% of the featured writings, drafts with loads of errors and mistakes, and a summarry of 'Tell me wat u think of my story'. Do you want this?
Please remember that I am not trying to offend anyone, I have written this for the sake of Booksie.