Skins that get made into "Skin Lines"

It feels pretty crappy to have a skin that comes out a while ago and then they make it into an official "skin line" with a central theme and yours is old so it doesn't follow that. I.E. Warring Kingdoms J4/Xin, Battlecast Xerath... I know they won't ever likely update those skins to be in line with the "skin line" but it's just dumb to me. They should rename them or something.