Hi, @Airbnb
I'm a superhost, with a property located in Goa, India. I would like to recommend a couple of items which could be featured with a special deal for superhosts.
1. In India, the water from tap isn't for for drinking. So we need to install a water purifier. Maybe you could partner with companies providing water purifiers so that hosts are able to provide clean and safe drinking water for guests.
2. Discounted products from partner firms dealing in bed & home linen also would go a long way in keeping the property neat and clean.
There are many companies offering the above products. It might be difficult for Airbnb to find a partner firm in most countries. What you could do is, fix a sum which all superhosts could be allocated in the form of a coupon code to shop on Amazon. That would give them the freedom to select items that best suits their own property.