I know now thx to another tread that we can view all the skins the champion has to offer. But i can view the 2015 release SKT T1 skins in the collection but can't view the splash art (because it wasn't released). I know this will change next patch but it botters me more then it should.
This board is the best place to discuss the client with Rioters and your fellow players, although it won't be our main source for feedback resolution. Look to the other tools, like the Submit Feedback button in the client, for that. As always, please follow the Universal Rules and keep content focused on appropriate topics for this board.