[felsokning]

>...and figured out a feedback mechanism to reward users who were generally pleasant / respectful on their dates.

This sounds like a social scoring system, which is bound to be fraught with issues.

It's also possible/plausible that trying to increase the instances of this proposed reward (e.g.: per date) is bound to end-up being an objective - in and of itself; not to mention that the reward instances would potentially occur far more frequently for people who are generally considered "attractive".