I'm familiar with the depressing yourself problem. When I was collecting data for that essay, I knew going in that there was a gender balance problem, but if you'd asked me beforehand I would have expected that I'd end up with a 60/40 or--maybe--70/30 split. Finding an 80/20 one was not the kind of happy surprise one hopes for.

I haven't watched any Korra yet; I'm trying to stay relatively unspoiled. But I really hope they address the issue you've noted as the series goes on.