Any chance we will ever get VoiceOver Updates?

I know, i know, this is not really that possible to do for Riot since probably the cost of updating voices for champions (with all the localizations as well) does not match the actual needs of the game.

But it would be GREAT, really GREAT if we could have some new voices for older champions. We get new voces for "Sion-Level" rework for old champs, but what about those gameplay/visual updates?

Champion like: Singed, Kasadi, Maokai, Shen.... All got a visual upgrade but no new voice.

I think that the voices of champions are really important to the overall feeling the player get, and also it's the only real way to tell some lore in game with interactions and stuff.