ARAM, healing, and buying items
I think it'd be fair if ARAM allowed you to heal if you went back to base. You already have to walk all the way back there anyway, so I don't see why it doesn't heal you, even if at a reduced rate or only for a certain amount. You're literally wasting time you could be fighting/pushing in order to heal or buy stuff so, why doesn't it let you?
Plus that fact that you have to die to buy items is ????