Some ideas for Heimerdinger

So i thought of this and decided to see what others thought about it.

Why not make his passive an out of combat heal? Specifically like garen's passive where if the champion or turret hasn't taken damage in x number of seconds then the passive will start to heal them for a large amount scaling well into the late game.

Then you could give him some sort of interactivity to structures. One example could be like the opposite of Azir's only W where heimer can spend one of his turret kits to empower an allied turret for a period of time.

Another idea (though slightly broken) is adding in a mechanic on his kit to repair allied structures.