Heart of Life "nerf" idea
Heart of Life as it stands is a brutal item. I use it on every demigod, even Sedna (who theoretically shouldn't need it that much). I have a relatively simple idea to make it more balanced: require that the user be near a friendly tower (of light/darkness). This can be visually justified by having the health stone "channel" energy through a chain of towers. This will make it more of a midgame item, since in the late game most towers are gone; it will make it harder to sustain pushes into enemy territory; and it will help balance the "HoL plus shield" tactic.