Terrain change near turrets to signify turret range?

I think it would make sense to add some sort of rugged battle texture near each bot lane turret to indicate "this is our base, don't come near or die". Right now it's just plain grass. They should make it feel very threatening for anyone trying to invade. People walk into tower rangeby accident all the time, even pros. I know the newbie tutorial indicates the range for you and I don't think it's a big deal. That's not a deciding factor in skill. It would be killing two birds with one stone to do something like this, make add some logical visuals to the game and make it feel like you're actually invading someones territory.