It will not be, because player and dev bias.
It's that simple.
I mean, just look at how uneasy they feel when it comes to their attention that a champion doesn't get use out of every aspect of their kit when they build what should be their "primary" build.

Riot & Plebs: OH NO! HE ONLY GOT 4 MOVES, THIS CAN'T BE ALLOWED! IT'S VITAL THAT WE MAKE THE VOIDLINGS DO SOMETHING IN HIS AP BUILD.
Everyone else: no it isn't...
Riot & Plebs: BUT LOOK AT ALL THE PROBLEMS THAT THEY HAVE! WE CAN FIX THAT IF WE JUST ADD MORE TO THEIR UTILITY BELT. WE WILL MAKE THE REST OF THEIR MECHANICS CONVOLUTED SO THAT THEY ARE LESS CONSISTENT AND REQUIRE "skill...." TO USE WELL.
Everyone else: [zombie-brand-facepalm]
Literally had a conversation earlier with a guy who said
moving it to a basic ability was incredibly vital to making them worth a shit outside of AD malzahar gimmicks.
yet, he could never explain why it was so important to make them "worth a shit outside of AD malzahar"...
After all, this exact same statement can be made applicable to a range of other champions.
doing X to it was incredibly vital to making it worth a shit outside of AP Nasus gimmicks.
doing X to it was incredibly vital to making it worth a shit outside of AP Varus gimmicks.
doing X to it was incredibly vital to making it worth a shit outside of AP Ezreal gimmicks.
doing X to it was incredibly vital to making it worth a shit outside of AP Volibear gimmicks.
doing X to it was incredibly vital to making it worth a shit outside of Udyr gimmicks. (Literally can't make optimal use of all 4 of his stances in a single build)
So when players are given the choice between having a full kit which scales with their stats AND auto attacks or having a full kit which scales with their stats without auto attacks. They will pick having auto attacks over not having auto attacks, even if that means the abilities are stronger, else they feel like they're is some wasted aspect of their kit.