Summoners Rift and League Of Legends art style

I have been playing since end season 3 / beggining of season 4 and i noticed one thing after all these years. 4 years ago, after 4-5 years, Summoners Rift got reworked from the ground and LoL took a totally different art direction on pretty much everything. After 4 years, now, Summoners Rift still feels fresher, newer, cleaner than what it was before. Champions followed the artistic style of the map. The first champ that i got struck by how different it was after his rework was Sion, you could feel that he belonged to this new art style, and not only that, you could understand that style was better overall. It didn't feel something from another planet, it felt like "oh, this belongs here, i can't see why it shouldn't". And so, after him, all the next champions followed that way. Now i have one question. 4 years and Summoners Rift got reworked. 4 years from then, do you feel that LoL should ramp up even more its art style? Does LoL need to raise the game experience even more in the future? Or did the Summoners Rift rework set the ultimate goal for League of Legends forever?