Where is the promised work on Sudden Impact? Another instance of mobile-champion bias.

Back in March there was talk about nerfing Sudden Impact because it is so dominant in its slot, and it can be abused by any champion with a blink, dash, etc. https://boards.na.leagueoflegends.com/en/c/developer-corner/EEHXQ3kv-quick-gameplay-thoughts-march-23 (ctrl-f sudden impact to see Meddler's comment).

There was a nerf from 4s to 25 s, but that obviously got removed from PBE since it would be too unfair.

BUT WHERE WAS THE PROMISED WORK FOR IT? This is one of the reasons why Assassins and high mobility champions have such high damage (easily does 1k damage in a 25 minute game, and sometimes more depending on the champion). And then it is utterly useless for any other champion that cannot abuse it. Why not make the lethality/mpen scaling? Why not make it so it can be used on specific champions.

Couple this with the fact that Celerity is only beneficial for champions that have movement speed steroids, these two runes are prime examples of how lacking mobility in your kit SUCKS for the most part.