Hey, so you now have the option to vote for which Champion you want to have a visual and gameplay update in 2020! I believe this was mentioned have been coming before, and now that it's available, you're able to voice your opinion now!
Personally, I'm torn between Shyvana or Volibear. I think in the past I wanted a Nocturne one, but now that I think of it, I think it's a good idea to update Champions that are already directly associated with others.
So feel free to vote now and let your opinion be heard!