Useful plugin

I am just a regular user of Woocommerce but I found this plugin to be helpful. I think it would be make even better if there was an over-ride option included so that if someone purchases an item that doesn’t have free shipping with an item that has free shipping you can choose to offer free shipping for the entire purchase. As it is I will have to refund shipping if I want to do this, which is another unnecessary step in the process which means a lot for a sole trader/solo business owner like me.