Do it again
Almost 10 years to the day, I'm going through the exact same exercise as MLG circa 2010. Scale one portfolio from a single property to five. Back then it was the slow crawl from just Halo..... into Halo, CoD, FGC, Starcraft, and LoL. The one insight about this situation that most greatly impacted me back then, was not the challenge of creating a successful esports for any one title, but making sure that the exponential network effects with a value 5^2 didn't just kill each other. Back then you couldn't control the wills of an established Blizzard, a Riot in its growth spurts of 2010-13, a core community like Halo's (you were responsible for), and also the quickly scaling online competition of CoD. That's a lot of assets Riot now owns outright, and has the benefit of some fairly significant esports experience to leverage against. TFT, Project L, LoR, VALORANT, & LoL.