Well because this is a seperate bounty for just a WooCommerce plugin. Most Bitcoin merchants I've seen use it running over Wordpress. They don't run stuff like Opencart or completely freelance carts.
Legitimate question, not being negative. Bitpay is also a processor, once the plugin is installed it will need to use a central authority (bitpay). Is this bounty also for the authority website that will hold the coins?
You don't need a central authority. Just have payment set to your address and its good.
Does this have to be for woocommerce. What if I were to create one for another ecommerce solution. Does the bounty still apply?
It would be nice if it were for WooCommerce. What other ecommerce solution did you have in mind?