Right we have all this however we need to come to a conclusion about what the character will be, so far we have a ball but like you said it's not very original and kind of boring, also i agree, all the games we make shouldn't consist of balls of some shape or form. i think we should go for a realistic or abstract style, steer away from the cartoonish style siege wars had and let objects have a bit more life.
My thoughts on this were some form of man but someone who is shaded so you can't see any key details. the character will need to stand out but not too much as it would be great if the visual effects could take over.