"why can't we have more healthy assassins like talon/rengar that go in and die"
Do people not understand that Rengar/Talon will insta-kill you while Rengar becomes as tanky as your tank by pressing W and then fighting for a few more seconds
and then Talon sometimes doesn't even need his ult to kill you but you're basically guaranteed to die and he'll do a lot of AoE damage with the ult.
At least with Zed he's not 100% entitled to a kill just because you got within his general area
this isn't even really a fixable problem either since they'd both suck if they went in and died instantly after killing one target, I just don't understand why people want to enable this terrible playstyle of making the game a 4v4/potential 4v5 just because they picked something that is entitled to kill you.