Currently, I've collected quite a few pages in my Favorites of works I love coming back to again and again. However, because the collection's so big, it can be hard to *just* select a work out of it. I usually start at one end or the other, and the works I've favorite'd in the middle pages go neglected. A feature I'd like to see is a random button: if you're browsing your favourites, your library, or any collections you've made, you could click the random button to just pick a work out of the collection of works you're looking at and bring you to FAKKU reader / the manga info page for one of those works.
It'd help users with large collections engage with all of it and would also turn one's collections into a fun hentai roulette of sorts.