kogs previous 5.0 atkspd buff would work well on a melee fist oriented champ
after watching the D3 monk in both D3 and in HoTs and looking at how his way of the hundred fists works, it would actually work if riot salvages old reworked kogs 5.0 atkspeed on a melee champion. being that the champion would be melee it shouldnt be nearly as problematic. the rest of the champs kit would have to be mobile or have some hard CC to take advantage of all that atkspeed tho(perhaps moving while atking like the monk in HoTS does).
-tank = gg
niche? Doesn't he already gain 80% attack speed? It will be overly redundant on other melee champion

. hitting really fast as a melee is not a master yi only niche. the point here is too make a melee adc that can break the normal cap of 2.5.