What if Kassadin was reworked into an anti-mage Skirmisher?
Just a thought, since he was originally meant to be an anti-mage bruiser, became a mobile mage then an assassin. It seems somewhere between this would be skirmisher, next to people like Ekko and Fiora his kit could still maintain some high damage and mobility, but could see the return of a reworked silence and some alterations to his kit to somewhat support his original fantasy without disrupting the current one too much. As his stats and abilities would be reworked to function more like a skirmisher, he would avoid ending up with his old problems.
Just food for thought.
Q silence
rework if they succesfully make a tanky anti mage in the midlane and it comes out great then i have complete faith they can do the same for kassadin in terms of anti mage rework
rework and if it does well as him being a drain tank then my boy
can do the same