Grimoires/Capes/Animations
Capes are a nightmare and a half to rig to character models in a game where there’s any sort of appearence customization, where you need to work with hundreds of potential models as opposed to just one or a couple. Ironing out even a portion of the potential clipping issues and getting them to look decent (and not just like plastic)would probably be a massive undertaking and not really worth it, which is why most games don’t have them despite the fact that everyone requests them constantly.
Grimoires would be cool, but it sounds like something that would be better suited as a new offhand weapon type than a purely cosmetic option. I can totally imagine my Elemantalist running around with a Scepter in one hand and a book in the other.
Definitely understand with capes. They would be a pain to add. My hopes are, Anet has a very small section working on these as an off-project. There are other things with much greater importance to be added!
I couldn’t decide between posting the grimoires as weapons or as cosmetics. I think both would be really nice, but also a lot of extra work. But, as weapons, they would be amazing. Maybe even two-handed? That would allow for some nice spell animations. Granted, even as an off-hand weapon, they could add nice spell animations. I love the idea of them, either way. Thank you for your constructive post, Electro!