Hi, Individual Productivity/Unics per each trade has been removed long time ago when and there was added 2 more trading ways in edit site but that is global.
99% of the people trade only on prod so removing prod option added speed on queries. This was done more than 1 year ago. Before there was an option on edit trade as well.
If you want to reward sites for sending traffic u can have a uniqe+clicks to reward most of them or an unique x clicks to reward sites having around 100% prod |