Hi Pam,
You are not out of line. You are absolutely right! Adding Sellers to "Favourites" is a very useful feature and might help us bring sellers to the site more often. Thanks for your suggestions and for sharing your thoughts. We did plan to release this feature in the beginning of the year, but then it was delayed due to some other priorities. I'll check the status of this feature and get back to you on when, realistically, you can expect it. Thanks again! And please don't hesitate to submit your ideas here. We love hearing what works and what can be improved. Thanks!