I find the concept of favorited roles a lot more helpful than favoriting the entire project, but in practice both things just link to the project page as a whole. It can be really tedious to navigate to the characters you favorited, especially if the names are generic and you have poor short term memory or favorited several of them from that same project. Since it's possible to link someone a specific role when you share it, why isn't that version of the URL the one that favorited roles use?