I wish when Riot made Legendary/Ultimate skins...

That they would make an effort to update the VO of the champ's base skin, as well as updating any L/U skins that aren't up to modern standards (looking at you, Alien Invader Heim).

This would go a LONG way towards making the game and the characters feel like a living, evolving universe. Many champs have interactions with other champs that are one-sided, due to the age of the champ. If they recorded new lines for the base skin at the same time as a new one, that would help mitigate that without having to wait for a VGU, which is not a thing that will likely happen soon for most champs, especially the ones that are candidates for L/U skins.