@Riot a question about non-rotating Game Modes

With the loss of Dominion, i've been wondering if we'd ever get something less temporary to fill the gap it left, instead of a myriad of toybox game modes

I remember back when ARAM went from being a custom game mode to an officially supported queue with its own unique map, and it was a really exciting time

personally i'd like to see a fresh, updated version of Dominion make a return in the future, but im mainly curious about opinions on ever including another permanent game mode, regardless of what it would be