I think it's great that you are actively supporting the gaming community, but feel that it would be better for Steem and easier for everyone if we attempted to keep the conversations right here on the Steem blockchain rather than taking them elsewhere such as Discord or Twitter. Of course promoting the platform/blog on outside platforms is a good thing, but, keeping the community tight and earning Steem with comments would be my preference.

Perhaps you could try to encourage conversations by asking questions about the blogs of the various game blogs that you support? Interviews with interesting people/subjects could be another way to bring the community closer together. Have some way for people to get to know one another. That way there will be a natural feeling of togetherness.

Doing those things would make your blog more interesting and likely bring more readers to voting on your own blog. I think that would be the thin edge of the wedge into starting something really big.