A great way for different brands to get their point across about the products they sell on Sears.com is for each brand to have a mini-site on Sears.com.
Interested in a Whirlpool commercial you saw? Go to sears.com and type in Whirlpool and have their mini-site come up showing the features and benefits and a tool to help you find the right Whirlpool product on sears.com for you. Sears.com has a small version of what could be with their "Maytag Showcase" when you type in Maytag in the search.
Same would go for Samsung, Frigidaire, Electrolux, etc.
The great thing about it would be that each manufacturer would be responsible for the upkeep of their own mini-site, therefore ensuring prompt updating and well-done production values because they'll all be vying for the customers of the #1 appliance store in the nation, Sears.