In my opinion, the arts side of Riot has been amazing lately
When I say the arts, I mean the splashes, world art, the skins, music, etc.
With the new High Noon skins, the recent leak of the new popstar skins as well as the prestige Kai'Sa skin, and the upcoming Harrowing skins, the skin team has been on fire. The skins seem pretty good, and they will most likely sell well.
The splashes of the game have been improved massively over time, with some champion skins being the exception (I'm talking to you groovy Zilean). I suppose the more recent examples would be the Irelia rework, High Noon skins, and the popstar line. The splashes of these are astounding, and I'm extremely hyped for popstar Kai'Sa. The world art is pretty good as well, it really helps to fleshes out the world, and in conjunction with the new map, actually forms a nice representation of Runeterra.
I'll admit, I don't really know how Riot collaborates to release their music, but the new World's song is amazing, and I believe that the World's songs have only been getting better. From Warriors, to Legends Never Die, to Rise, in my opinion, they have only increased in quality. Riot also released the Warsongs a while back which were decent. Some of them I really liked, but some fell flat.
Music in game has also been steadily improving, with entrance music on Zoe and Jhin, along with a musical score on Aatrox ult, as well as more that I probably haven't noticed.
Animations and music on the login screen are good but underappreciated, since the login animations make some computers lag.
Overall, Riot has done a stand up job bringing their world to life, and I personally appreciate it and will happily drain my bank account for them. TY Rito
P.S.: Balance sucks , graves op
P.P.S.: Balance team is silver