Ultra Late Game items?
In Season 5, if the game ever got to extreme late game (6 items + elixir), it wasn't uncommon for adcs to replace their boots with a zephyr or a (probably second) phantom dancer. With the ADC item reworks, is anything along those lines still viable, or is sticking with the normal items one built up over the course of the game better now?
(Incidentally, did/do any other roles have any similar late game swap outs where the item isn't cost efficient to be built normally, but the raw power make it worthwhile late when cost efficiency is a non-issue?)