@Riot: What are your plans for Morgana and Kayle?
I think those two are the ones who suffered the most from the Retcon, leaving them with absolutely zero reason to even exist in Runeterra. They are pretty much on the same level as Taric with that, with the difference that Taric could be possibly from Runeterra all along as he is human. Suddenly intruducing a race of angels to the continent would be kind of... weird.
On top of that both of them need some updates regardinbg their gameplay, although on different scale. While minor changes could be enough for Morgana, Kayle will need a full Sion to bring her identity ingame even somewhat close to the lore.
But first we got to deal with the lore before we can even think about gameplay.
I'd personally like them to keep their otherworldy origin, probably Morgana entering Runeterra by accident while escaping her murderous sister. The moment she's there she finds political asyl in Noxus. Respectively, Kayle sides with Demacia, as they share the same "We are the good and all evil must perish"-ideology.
Or what plans do you guys have for these old champions?
or even
,making them more spiritual beings(maybe with kayle representing justice and morgana freedom?),but I dunno if I'd really like that,I guess that could make them too otherworldly
Main, I am always excited to fight against
because I wholly enjoy the Lore dynamics between champions (examples: Soraka/WW; Diana/Leona; Ashe/Sej/Liss; Rengar/Kha'Zix etc). With that in mind, I'd love to either see their world come to life, or get some sort of in game interaction between them. Like the Freljord Battle of 3 Sisters mechanic is cool from a lore continuity standpoint. The Hunt between Rengar and Khazix literally affects the way the entire match-up is played. It would be nice to get something like that in the game. Just my opinion though