It would be convenient to have a link on the "My Auctions" page to "My Favorite Sellers," sort of a reverse of the bidder-blocking system...if one were to click this link, all the auctions by any seller added to that list could be separated out and displayed. There are some sellers here who are better than others about following the rules and the law on C&R and Antique status; there are some sellers who are consistent providers of first-class stuff; there are some sellers who always have great photos. Those guys deserve some sort of boost from their loyal buyers, and this would be one way to ensure that a potential buyer doesn't miss any of their auctions.
The converse would be to have a list of sellers whose stuff you'd NEVER want to see, but that would, I suppose, be contrary to the spirit of the site, and it can be done easily enough from the current search page. I know I can search fora particular seller's auctions now, using the search engine, but this would put all the guys whose aucitons I regularly reconnoiter in one place.