@Riot Why not make the rotating game modes change daily?
Instead of making the rotating game mode change every two weeks, why not make a different mode be present on each day of the week?
Maybe something like:
Monday: Black Market Brawlers Tuesday: One For All Wednesday: Hexakill Thursday: Legend of the Poro King Friday: Ascension Saturday: All Random URF Sunday: Ultra Rapid Fire
Then instead of putting everything into the PvP Tab (referring to new events), a new tab could be made called Events which includes the Daily Rotating Game Mode and whatever the new two week Event is.
Event, PvP, Co-op Vs. AI, Training | Create Custom, Join Custom
This would help players from getting burned out on the same game mode, and also allow us to always know the schedule for the game modes (as opposed to only knowing right before you guys put it in for 2 weeks).
Having the rotating game mode like this would also mean all future modes wouldn't need to remove the rotating game mode in order to have it added as it could be added in alongside the RGM.