Salutations Adventurers. I am undergoing construction of a campaign setting at the moment and am intending to utilize a .gif image (in the form of a spinning blade) to make for a more immersive and attractive environment. At the moment, the image is a still image and the animation doesn't come through, i figure it'd be best for Roll20 as a community and the world builders and battlemap designers to have the animated image implemented into the application. So long as it doesn't exceed 10 MB which isn't always necessary (e.g. Spinning Blade, Flamethrower, Glowing Mushrooms, etc). Our favorite content creators could begin development on releasing .gif formatted content which would be attractive to anyone interested, as well as it introducing a wide array of new ideas. It'd also be best for the .gif images to be transferable between all layers during construction and play. It'd be real handy, Me thinks :)
