About Anivia's RE
I understand how Anivia's RE is unfair and deviate her game-plays from what she is designed for. While her god-tier potential zoning capacity (what she designed for) got even better after the 6.23 changes, the cost and benefits do not balance out in the current meta (where high-mobility champs roam free and slow/cc resistances are powerful). The removal of RE instant burst generally prevents Anivia from reaching her intended potential. Even with the existence of RE combo, her weaknesses were already prevalent and easy to abuse.
- Low mobility (slowest champ in game) -Slow skill shot as a critical initiation/retaliation tool (Q) -Slow animation and distinct auto animation -She has mediocre range for a mage, and a terrible one for a low mobility mage (off-set by powerful zone controls but that's situational) -Long cd, but would still prefer health and mana items over cdr items due to abysmal base values -Require intensive team-fight understanding to maximize usage of W and R -Rely on base damage (really good base damage though) for early game due to mana constraints, this means she can be terribly screwed by early MR purchases. -Require extensive understandings of ally's and foe's team composition to pick. (More so than other mid laners) -Many more I might have missed, but my point is that **she is a hard champion with plenty off-sets already ** (now become even harder, I say too hard)
Traditionally, RE combo exists so that Anivia have enough consistent pressure against divers and enemy laners. It was a mechanism to ensure Anivia can reach the point where she can do what she is unique for (Godly zone controls with arrays of massive DPS and frequent bursts). With the 6.23 adjustments, Anivia's zone controls got even more powerful; however, she now lacks a reliable way to win lane and properly reward _decent _Anivia players' acumen. Even though her potentials got better, I see her becoming a worst champion (for myself at least) because her potentials now become largely inaccessible. While I do not know, frankly, how the removal will affect high-level/professional play. However, it is clear that 6.23 has bought her skillcap way above and beyond that of a recreational Anivia player like myself.
I am not just here to complain. Despite all i have said, i acknowledge RE as very problematic. On the other hand, I see the changes bought forth in 6.23 lack efficacy (unless making Anivia very situational and hardly playable to low-level players were the intentions). I hereby offer a suggestion.
I believe Anivia's E should conditionally be a skill-shot or a targeted spell based on the chill status of the target (Think Urgot's Q an d E interactions, but on a much shorter range). E would fire as a avoidable skill shot and still do bonus damage to enemies affected by her uncharged R. E would fire as a targeted spell (like now) to enemies affected by her Q and charged R.
Here are why I think my proposal is at least considerable. -Give some power and safety back to her laning phrase. A playable laning phrase ensures that her other unique potentials can be utilized later in game, right now I think this is too hard. -Make assassins and divers fear her "more" again. Right now she is often miss-Q or die against divers/assassins. And Q needs to have long cd and is already extremely slow and easy to dodge. -Instant RE now can be counter-played in lane and team-fights while can induce similar impacts but require more skills. -Not too OP in team-fights. Tanks can block for squishies, RE 100-0 should only happen to squishies, tankies should die to her zones and dps instead.
While I acknowledge instant RE is problematic, I argue that the 6.23 changes were not effective for the following 3 reasons. 1) She already has plenty of obvious and distinct weaknesses. 2) Her currently conditions makes it hard to utilize her unique but immense potential. 3) She is now made TOO situational in the game and TOO difficult for low-level players. I welcome comments and criticism regarding my proposal, but I ask for constructive and critical ones. I also hope that my proposal would get Riot's attention hopefully. i am typing this because I have a personal passion for playing Anivia and I hope that my effort here would ameliorate Anivia (not just make her too op or up, but become a better, playable and balanced champ). Thank you for reading :)

given that he is also decent at zone control, wave clear, better laning, deals burst damage, can instagib squishies better than pre-6.23 Anivia could. Now she offers nothing until the mid-late game where team fights are breaking out. Furthermore she is now far more vulnerable to hre counters in lane than before as her level 6 power spike pales in comparison to literally every mid laner.