I have been learning the new Unity GUI system and have created a smart health bar. For now I just made quick 2D icons in Photoshop to use as placement holders while I get the functionality working as I want. So now this health bar adjusts itself accordingly as your current health decreases from the maximum health value. It not only changes size but colour as your health gets lower. Also with the new anchor points system the health bars overall XY position adjusts according to screen resolution.