Recycling Dominion
As mostly everyone knows, dominion is being retired very shortly. One of the aspects of Dominion, Capture Points, was recycled into Skarner's kit as a unique passive which added change to Summoners Rift. Since Dominion is leaving and not leaving much behind besides an icon, one more thing I think they should do is give us the option to change our music in Summoners Rift to the Dominion theme. I doubt it would be too big an issue to work around, but just adding it to the Summoners Rift music options would be a unique and easy parting gift to all players of Dominion.