Hi there,
Thanks for your thoughts, and it’s interesting to hear how you’re working on integrating Pinterest for WooCommerce on a multisite. Most WooCommerce extensions should not be activated at the network level, but instead activated per site in a multisite setup.
I haven’t seen this requested or mentioned before, and we’d love to hear from you here on our feature requests page if there’s a gap in how you’re planning to use Pinterest for WooCommerce: https://woocommerce.com/feature-requests/pinterest-for-woocommerce/
If you have run into any particular errors and would like support, please open up a new topic to get help.