"Ekko is an assassin who scales in long term skirmishes"
First thing that makes no sense. Assassin or Teamfighting. You get to pick ONE.
Some examples:
Kill person GTFO w/ pole.
Rift in, wreck carry, Rift out.
Jump in, make sure target is alone, delete their HP, hop the fuck out.
Pray to god you don't get CC'd, because the second you do, you're fucked.
Jump on carry, kill them, probably die because you have such strong damage Riot gave you no escape. Even assassin's considered 'broken' by many people don't do well in teamfights.
and
sure can easily kill your carry and escape, but it's pretty unlikely that a non-fed as shit Zed or LeBlanc is going to kill multiple people.
Next thing we have is currently considered a huge issue with some assassins. The safety factor. Zed and LeBlanc are hated for it, Kha'Zix got gutted for about a month because of it. Kassadin has received a metric fuckton of changes because of his. Ekko has an "oops" button that costs no mana, heals, and does damage.
Mobility. "League of Legends isn't turning into an utter mobility fest." Yeah, let's give this guy a dash that can go through most walls, and then his next auto attack will blink to the target. Because fuck it.
Now what's the biggest thing that most assassins don't have, or have very little of? That's right, CC! Except Ekko! He gets a 2+ second AoE stun with a huge ass shield. He also gets a slow, which you will be forced to dodge all laning phase because it's pretty much a Nidalee spear that goes through targets but does slightly less damage.
Now quick, name a champion that should almost never lose lane, especially against a melee champion? That's, good ol'
. Playing as Renekton, vs a first time Ekko, I barely won lane. Of course, he did get some ganks, but that's not the point. Nobody should have an easy time against Renekton. He is the epitome of fucking your lane phase up. Not Ekko's though, he just sits back, gets CS with Q, and as soon as you go in he throws down his slow/stun, dashes away, and then can always press his "oops" button if you try to tower dive him. The only times I was able to kill him (I didn't have ignite) was if I flash stunned or waited in a bush until he thought I backed.
Fuck this champion. Fuck this mobility creep. Next champion better have some sort of stupid ass anti mobility mechanic. Mobility creep is getting retarded. You'd think Riot would've stopped after dashing on every auto attack.
and 

knows that feel.