league is copying heroes of the storm's play model whether you want to believe it or not
long death timers after 20 minutes? check. the ability to 4 man premade in ranked? che- oh wait blizzard removed this because it was toxic and gave people who weren't very good a way to climb via premades. infrequent balance patches leaving in stale metas/unfair cheese? check.
i don't know why you're going down the same road as Heroes of the storm, but i can tell you heroes of the storm has an extremely low playerbase compared to league BECAUSE they went down the road they did.