1- Display seller star rating for each seller in the store list page (not seller individual page).
2- Display option to sort sellers by star rating in store list page same as product sorting option in products page.
To avail this kind of addition you have to customize the plugin. But I am really sorry to say that we do not provide any customization services. If you need this option very urgently you can hire a developer you can do the customization on your own if you know how to programming.