Unpopular Opinions: AP Tristana is the most well-designed assassin
As much as people hate her, she is the most well designed. Even though her ult needs a .5 scaling reduction, her kit is the most fitting to an assassin.
-She has long cooldowns. Assassins should always have long cooldowns, but it seems they never do. Akali has a spammable, high damage Q, same with Zed, same with Leblanc. It is fine for assassins to have low-damage spammable abilities to CS with, but if these abilities are both high damage and low CD, this leads to a character being able to kill more champions than should be allowed
-She has no free escape Simply put, either Tristana gets the kill and escapes or she dies. Her escape hinges on a reset, so a well-coordinated team can lock her down and kill her. Bad design is when an assassin has the ability to deal tons of damage, fail to get the kill, and still make it to safety, see Zed ult, Fizz pole and Leblanc W.
-She has no easy way to waveclear Tristana cannot instantly clear waves, unlike several assassins. In order to instantly clear a wave like a Talon Rake or a Zed QE, Tristana must use her 18 second CD jump-her only escape. She can clear waves relatively quickly with her E passive, but does not have the ability to instantly unpush a wave.
-She has a terrible lategame, and relies on her wonderful midgame to win Lategame AP Trist is a nightmare. Everyone gets tanky, carries get BV and GA, and everyone is warding. AP Trist relies on the element of surprise to get the upper hand on her foes, because if you see her coming, you can simply Flay in her direction to cancel the long channel time, slow movespeed jump.
-She cannot kill entire teams AP trist only has one AoE ability, and it is her lowest damage one. Unlike Talon, who can instagib multiple people, and unlike Leblanc and Akali, who can use their low CD abilities to stay relevant throughout the fight, AP Trist can only kill one person, unless the entire enemy team stood next to each other for consecutive Rocket Jumps.
End opinionated rant on how, in my opinion, the only well-designed assassin was shown repeated nerfs while things like Fizz continue to frustrate players to this very day.