WebHooks will be wonderful. I do need to do more research over the topic from a general standpoint to see the best way to implement it into NodeJS (there are bound to be modules available on NPM for that).
On the topic of WebHooks, assuming there is a “New Follower” WebHook, would there also be one for “Unfollowed”? And could a feature be added that shows if the new follower came in from a physical press of the follow button on the channel page (where the chances are the person is actually viewing the stream and followed because they liked what they saw) vs the Twitch App Onboarding process (where the person never has to even view the stream to follow).