So funnel is still a thing, as is the untouchable Kayle-Yi strat.

Except with Taric instead of Kayle. Taric just sits top with coin, doesn't farm, waits for Yi to come leech xp and gold to put him a mile ahead, then when he's up by an item or so starts going for unstoppable, no-counterplay dives with Taric's ult. So far as I can tell there's literally no way to stop this since Yi is invulnerable, can juggle aggro with Taric when the ult wears off, and is untargetable most of the time anyway due to being fed enough off of ambient gold leeching to get easy resets anyway. How exactly do you stop a Champion that is immune to both damage and cc, and can three-hit you?