As a player who came into this game, and fell in love with a certain champion (Heimerdinger), then watched him get nerfed into hell almost 3 years ago now and then just left that way, I would say that I am quite DISSATISFIED. Riot has been saying there was a rework coming for him for years now, but it has never materialized, instead they fix everything else before him and leave him forever on the back burner, with the lowest win rate and a 0.4% pick rate thanks to them totally killing his entire kit.
Taking away literally HALF his AP scaling and nerfing every one of his abilities range by about 20% was just a SMALL part of all the nerfs he got. They fix Eve who was nerfed after him (and nerfed MUCH less) first, they fix newer champs who didn't even exist when he got nerfed first, they fix champs with less problems first, they even moved the dev working on his rework off of it and onto designing new champs instead so they can release them faster. All Riot ever says about this is how horribly toxic he used to be before he was nerfed, like that somehow might justify them NEVER reworking him and just leaving him forever obsolete.