I have an idea! Since creepers are pretty much the icon of Minecraft, why not make a aether version. it would be hilarious too see a creeper with tiny wings that slowly flies toward you. it could drop a different type of gunpowder that could make new TNT and other stuff. Also, Aether Potatos!
They've already stated that they want to stay away from pure aether versions of stuff, to keep it original. With aether cows removed, sheepuffs are the only exception now. Oh, and this isn't even the mod thread. If you want to make suggestions, you need to go to the actual thread.