There is a skin i've wanted to have for a long time now (yellow jacket shen), but I never know when it's actually available for purchase.
So I got this idea that might be pretty easy to implement and will probably earn Riot more profit too.
For skins that aren't always available make a 'notify me' button so when it is available you get a tiny notification in the client, i'm online almost every day but i'm not going to check the shop every single day just in case the one skin I want might be available.
Maybe there is some reason this doesn't exist yet? I don't see any downsides to it myself and it would be super handy.