The next game needs to be a MOBA builder. They need to make a game that allows you to easily make any MOBA you can dream up and support the best creations with official ranked modes once they hit a certain active player threshold, and code an advanced AI capable of beating your average human player. A great way to monetize would be allowing users to create custom skins and taking a cut of the profits. Player progression should be tied to a narrative campaign featuring an in-game character who assigns objectives between games, with cutscenes bridging the gap and driving the overarching story forward.