I've suggested this before, but was told that the current off-topic boards are already underutilised as it is. I was told to go make a sports org or a general sports thread.
If anime can get an official org, a sports org can too. My issue with this idea is that sports is such a broader topic than anime (and the other specialist orgs) and there's so many different things to discuss. I feel like the org thread would get real messy, real fast and it'd lack cohesion.
So I still support the idea of a sports board in the general section. We don't know how much people will use it until we make it - so to use 'it won't get used' as an argument against it is just some crazy fortune telling. Do a trial. 3 months. If it's not getting used then delete the board. No harm done.
If we're worried about the number of off-topic sub-boards, I'd suggest merging computer chat (mostly defunct) with Gaming.