You might as well remove evelynns stealth at this point.
You keep ignoring the community's opinions or ideas, and keep twiddling "your" ideas while you do not even play the champion. Sure you can "balance" her by making her useless and make her really UNSATISFYING to play.
The stealth is literally the size of a whole lane, while her skills are near melee class range, Twitch has less radius, more range and broke the game for a whole year and you still refuse to nerf even if its preseason patch.
This is going nowhere. It is the same situation as rengar and leblanc. You "rework" and icebox it for a whole damn year making them unplayable. You might as well remove the stealth completely if you cannot balance it on your OWN.
Or hell, remove stealth from the entire game and make assassins tanky just like divers and merge them as a whole class and deleting all sorts of escapes from the game. Might be easier for you guys to balance the game ONLY on supports and ADCs.