I fully agree with the idea of getting more banners. We’ve gotten so many new sprays and avatars, but no new banners over the years. I understand that 3D modeling is more time-consuming than a simple spray or avatar, but it’d be nice to at least have a couple new banners.
As for other ideas, I’d love to get a murloc themed banner with bubbles coming off of it, or even a Kirin Tor banner. I’d also love to see animated banners, since they are the most unique sets of cosmetics in Heroes of the Storm. The “upgraded” banners, such as the warbanners, should be animated and have something special to them, at least in my opinion.