Hey, man, your hydra is cool! I like her, and i want to see this hero in action! Dont be shy and continie writing your ideas! Maybe you have the luck, and your hero is will be maked! I write three hero suggestion some time ago, too. Yes, all hero suggestions here are ignored, but that is very fun to write them, anyway!
I would like to see more heroes that have different states/forms like a sun/moon hero that can switch between light/dark forms changing all the abilities. Even something like the invoker from dota would be amazing but I know anything the designers come up for an invoker rip off would be broken beyond belief.