This is a bit tangential to the target discussion, but I feel like it is still important. With the launch of World of Warcraft: Dragonflight, Blizzard is both targeting new audiences whilst supporting their content creators with Twitch drops.
Streamers are streaming the game more which further advertises the game and more people are watching to get the loot which boosts streamer income resulting in more content from the game itself.
To link back to the discussion, I believe that further success can be had by supporting streaming content creators with drops. Maybe even consider old content from battle passes, or two free chests, or extra in game currency for a tier of the pass or two tiers or whatever the value may be. This not only keeps people watching the game's content, but it keeps creators creating content for the game.
Thanks for reaching out! We are absolutely looking at ways to support our awesome content creator community, including things like Twitch Drops for their viewers.