[Graphics Suggestion] Scorch Marks on Structures
I was just in a CO-OP vs. A.I. game and I saw the bot's towers crumble and fall. This made me think: "The crumbling is only an addition to the health bar of the towers. Without the health bar, I would have no other way of knowing what damage I've done to the turret." A crumbling tower is a kind-of "champion's point of view" interface metaphor.
So I suggest there be a graphics update that includes some kind of scorch mark / slight burn damage / slight puncture damage to structures as part of the interface metaphor.