when will riot put some work on assasins?

this class is still preety undefined, we have things like yi, nidaele, zed, rengar and shaco there there is not realy a thing that assasins specialize in overall,there are ones with good single target burst, aoe damage (this covers single target burst too), sustained damage, tankyness

usualy people define assasins as single target murderers who rely on one combo to kill, but riot nerfs them to the point when they rarely can do that but that does not cover the definition that riot gave them

on teambuilder its writen that they seek out weaker targets and kill them quickly and "mercilessly" but sorry how does eve and noct kill quickly, and why is akali or fizz capable to just burst a tank down

i get that riot struggles with counterplay for those guys because lcsmoney but this class is insanely undefined compared to bruisers who riots cries about (they say that they want to give them a role, but they dont notice that assasin covers like half of the roles we actualy have)