Please give AI players the ability to sweeten their peace treaty requests with goodies: magic items, quest reward creatures, resources or gildar.
Absolutely, yes please. Would be nice to be able to exchange a city as part of diplomacy too.
Or how about an event where a powerful hero from another faction seeks to defect to yours? Or one of yours defects? Or a whole city?
That'd be fun too. Being able to bribe a champion to join you maybe?