Adding a gaming board is not going to make Bitcointalk great again but it will give a scope for gammer to build their own community like we have gambling community, altcoin community.
I am all up for more boards, but wouldn't it make more sense to first see if there is an actual interest in gaming that would warrant a dedicated board? I just went through few pages on the off-topic board and I didn't see a single gaming thread, which makes me think that there's simply not enough gamers here willing to talk about the subject.
We have no way to get a stat unless we have a board.
For example, users like me and you are so addicted in the forum, if we have something to discuss about gaming, we surely know that there are no place for it, we are not going to bother to create a topic in off-topic. But if we had a board then we would had a different mindset.