wow what an amazing comment and the work you are doing is second to none. its amazing how much more reach influencers have, and there is a marketing strategy that can be used for influencer marketing. Very oftern you dont even have to go after big influencers, but people with maybe treble the following of your self is enough to gain a lot more followers.
There are some new tools that gamers might be interested in if they are already sharing on other platforms. Take a look at share2steem.io. its a cross posting platform and as far as I know, twitch is one of the platforms that users can cross post from.
Its hard to break out of the steemit bubble but it looks to me like you are doing a great job. My advice is try be consistent