Does ekko just need higher/non-scaling mana costs?

The lovely fighter/mage/assassin/tank that we all love clearly has some problems with being able to utilize items which aren't intended for him.

Though i was thinking... the main problem comes down to ekko having tools from all the aforementioned archetypes, yet really lacking any real disadvantage of those same designs. Shy of being melee...

ATM his costs are pretty low compared to mages with similar capabilities... Like comparing him to karma, their ability costs and base damages are very close, yet karma has only 1/3 of the utility. Even scaling damage across their kits, karma actually has less.

::Rant Beyond this point:: I'm very critical of the champion designs, what has been deemed acceptable by riot, for a while now. While there are some champions who i feel need to have some serious changes having overstepped what should've been considered "acceptable" , cough cough, I'm pretty sure that ekko is the only champion that i can unquestionably say can't be fixed and keep his identity...

He either needs a complete re-release, on the scale of the karma re-release, or outright removal. The only reason for this is because by having all the aspects of his kit which allow him to be played proficiently as a mage, assassin, fighter, or tank. He simply can abuse almost literally any meta which rises. The only exclusion being marksmen meta... but idk crit ekko anyone?