Term & Conditions and Shipping Information
In my country, and i think in a lot of countries, is mandatory that the client who buys a product has acces to the term & conditions. In a multi vendor site, each vendor should have their own term & conditions (including refunds, warranties, product return conditions....).
This information, ideally, should be enter once (for example in store settings) and I think one pretty way to display this information could be adding two new tabs that display automatically in all products:
1. Term & Conditions of the Vendor.
2. Shipping Information
and also in the Vendor profile page.
Each time a vendor update this information, admin aproval should be required, if not, it makes no sense as someone with bad intentions could change his terms as they need...