I think killjoy is not fun at all. Its just a camp agent who avoids fights. In a afterplant you just hide and put a nade on the bomb. You take a site with your ult. And you can't come behind cuz there is noway you can counter her turret like the cypher traps (wich you can tp behind or jump with jett).
The game is becoming more boring with this cuz people avoid fights.