Low health towers
If it has come time and towers are about to fall, I say we make the towers priorities enemy champions before minion at like 100 health. Why? The rate towers fall makes this game to easily snowballed by those who can sustain the damage. If you are already able to destroy the towers, that probably means you can take the hits. Take Wukong for example. He killed me once and in that 8 seconds i was dead, he took my tower. Talk about abuse damage levels. But he wouldn't have been able to do so that early on if he was prioritised over everything else.
On top of this towers should shoot multiple enemies at once. Making them less useless.