Splash arts that should not change:
- Morgana
- Miss Fortune
- Leblanc
Too iconic and nice.
Too iconic and nice.
The thing about Morgana's splash is that Morg actually has to look like that in the first damn place.
Do not change my LeBlanc!! 
I agree with the OP about Morgana and Miss Fortune, but less passionately. 
I like Leblanc's. Miss Fortune has potential to be changed, but the art style that's been constantly used on the new champion splashes just makes me think hers won't be the same. I don't see how that style could be put on MF
They WERE changed recently, no?
As a MF main I agree with this wholeheartedly. 
She can get a VU with new animations adn particle differentiation for skins, but her base will be gorgeous if remodeled after her actual splash, with more pale skin, less oversized guns and a beautiful animated hair :D
I just wish for the Narrative Team don't bulldoze her Lore and take away her plans of becoming elected Mayor of Bilgewater to put order in that chaos :(
Riot isn't changing splashes just to change splashes. They're changing them because some are bad.
The ones listed are in decent shape, but I don't think they're quite as good as some other recent ones. I actually disagree and think that LeBlanc's has fared the worst of the three. It's good, but it's a bit static. Not very representative of a mobile champion who pops in and out here and there.
Regardless, I don't forsee any of these being changed in the near future.