Are Assassins Doing Their Job Too Well?

as·sas·sin əˈsasn/ noun a murderer of an important person in a surprise attack for political or religious reasons.

Notice how it says AN important person, not the whole damn team. Most assassins in league are capable of fulfilling their role but doing it too well. An assassin is a person who is designed to take out ANOTHER person. This means that someone has to go 100-0 against one person to get the job done and than slip out before they get cc'd into the ground (or air with this meta). Instead, can 100-0 your whole team within seconds. Sure they can be countered with cc, but so can every other champ. I have no problem with mobililty on assassins; I have a problem with assassins that can not only nuke their primary target, but can take the whole team down with them cough cough akali, kat. I think that assassins shouldn't have AoE abilities if they're meant to take down a single target. Anyway, just another complaint forum so downvote if you wish.