Easy global editing of "Add to Cart" text in admin
Suggested in the comments for this post on WooCommerce for nonprofits: https://woocommerce.com/2017/01/extensions-nonprofit-woocommerce/#comment-3177182
Add an option to the settings allowing admin to globally change "add to cart" text to text of their choice, ex. "add to basket," "buy now," "make a donation," etc.
Right now this must be accomplished via an edit to functions.php (https://docs.woocommerce.com/document/change-add-to-cart-button-text/).
Alternate idea: build it into Storefront Powerpack if it's not already (IIRC you can only change color on buttons, not text).
Something like this would let you do that pretty easily. It's exactly the sort of thing it's designed for.