@Riot ever plan to do a problematic champion/mechanics update?

By problematic i mean or a few not noted champions

These champions can't remain strong(even in the slightest) because they either dominate the normal/ranked game or they completely crap the competitive scene (e.g

And they also have design flaws like Ekko's for some odd reason RIDICULOUS amount of slows, ignoring one of his abilities completely while having a majority of his power budget in his W, or possibly the fact that nearsight is a toxic form of cc