My honest opinion about Ekko

I think he works far better as a tank/ap bruiser than a glass cannon ap assassin. There are several reasons for this, I find that Ekko is better in extended fights than most assassins. Being in extended fights allows you to proc your passive. Setting up a good W in teamfights often requires you to tank damage, also having sustain in extended fights often allows you to ult directly on top of the enemy. When I saw his kit on release before looking at his ratios I was certain he was going to be an ad bruiser. I completely get the nerfs that are on PBE now, tank Ekko was a problem but my fear is that Riot is forcing him into the AP assassin role, as a glass cannon assassin his damage just seems kind of meh when compared to who can easily 100-0 opponents. Also in teamfights he often gets deleted before he can proc his passive use his W or get a good ult. I have found Ekko works best as an AP bruiser, he still deals decent damage and is tanky enough to do all of those things. I'll honestly probably still build him this way after the nerfs to tank Ekko.