For me Reddit is just another place to post content, i.e having my own sub reddit, the main issue with Reddit as a platform is there is no "overseer" as it were, which mean say, the /r/eve /r/wow sub-reddits are run by fans, not officially, which means they can simple edit the Reddit posts to suit themselves, allow people to post content they agree with whilst censoring other's content they don't like.
IMO game sub reddits are pointless. When you have moderators and owners who will do as they please, I mean what's the expression "we are only human" therefore, any actions taken by these "moderators" are within their rules as a whole on Reddit, of which you cannot "complain" or "report" said moderators to any higher-ups. So should say a game subreddit such as /r/minecraft which has millions of followers, allows "famous" YouTubers to post content, but unknown or "small" content creators, call it "self-promotion" and remove it.
So does Reddit help with YouTube/Twitch/Kick - In short no, because to reach said player base, you would essentially have to begin a "journey" of building your own SubReddit, to your own rules because unless as stated above, you are famous, you will always be accused of "self-promotion" and have your posts removed in said SubReddits. Potentially be banned from those subreddits in the first place.
So makeover or not, Reddit will always be a place for those who are famous to grow their brands, whilst those who are not will struggle and struggle to comply with post content and have it viewed.
Potentially one fix would be for game Reddit to run weekly threads on say a Sunday where in one single thread, anyone can post videos and have them viewed and the thread is deleted after 24 hours.