Quite sad how Riot is giving up on some Champions
###"Kalista, along with Ryze and Azir, is a champ we're not working on for a while. That reflects that we feel we've sunk too much time into those three champs over the years and that the amount of further time needed now would create a bigger overall improvement to the game if we spent it on other champs. Realize that sucks if you play or want to play one of those three, but do feel it's the right overall call."

I get that you want to work on something that you are sure will not be proven to be a waste of a time, but isn't the definition of a rework that the character is remade a new, while maintaining minor parts that reflect upon their previous playstyle? Most of these champions reworks that you gave, barely changed anything.
Why not go through some abilities that are most problematic, and rework them completely on how they function or give a complete different ability if it simply doesn't work regardless of what numbers that exist, or if it proves to be problematic in both SoloQ and Pro Play.
Even some of the people who main these champions are willing to accept to get a brand new rework (meaning an Aatrox sized rework) if it meant that their champion was in a better state.
