We’ve contacted TF a few months ago because we’ve had difficulties choosing the right, or maybe I’ve to say the best category to sell a theme. Per example, our theme Mikmag can be used as a Magazine theme, corporate theme etc but has integrations for Woo Commerce, Buddypress and BBpress as well. Or, per example theme James, which is a Corporate, Creative theme, including WooCommerce.
Several buyers of TF contacted us and gave the following feedback
‘If your theme had stood in category eCommerce, (and also Buddypress) I’ve already purchased it some time ago’.
That’s why there should be an option to choose multiple categories.
But my suggestion is go with eCommerce. I think more people visit that category then corporate or BuddyPress.