I wish standalone Visual Updates could be a thing again.
And I'm not talking about a simple texture update, I mean new/improved models, animations and visual effects, ALL together (not only a VFX update like Cho'gath's right now, even though it's really good).
There are so much champions that could get some.
Now the only way for a champion to have updated visuals is by having a gameplay update with it.
The last "full visual only" update was Alistar's back in 2015. MF got updated shortly after but had a new passive and some minor tweaks to her kit.
Amumu, Anivia, Cho'gath, Blitzcrank, Corki, Mundo, Ezreal, Fiddle, Gragas, Jax(...), most of the champions released in 2009/2010 and that haven't been updated yet (Not counting the large scale texture update of 2015) nor have any planned updates.
I also wish that Champion that already have been updated (Alistar, Fiora, MF...) could get a voice over update aswell.

Alistar and the champions above got model updates only. They didn't receive animation updates or anything else that is supposed to come with an actual visual update. All of these champions have had their kits updated since their model update (some at the same time), and even Maokai has received a new VO. However, most all need functional, complete VOs, and they all need fully updated animations, as NONE of them have recalls or homeguard animations, which are the most basic animations on champions now.
. He got the entire treatment, from new models, animations, voice lines, the whole nine yards. It's insulting that the six above are technically qualified in the same category as Visual Update as Karthus, or in MF's, Shen's, and Fiora's case, "full VGUs" - as if they're anything remotely similar to real VGUs like Tristana or Ryze, some of the most simple ones released beyond them. These champions need to have the work that was begun on them completed, so they don't feel old and out of place in a game where we're getting voice lines for using abilities on champions (Swain VGU) and special animations such as duo dances (Xayah, Rakan), and even the most simple and basic recalls, like literally every new champion and VGU has received.