Sorry but that's a bit of shallow comment.
Nordeus'interest is indeed to maximise the number of tokens spent, while keeping users (way beyond the minority of users of the forums) satisfied.

Maybe their focus was on the auction market first - and I tend to think their reached their objectives.

They have all the data about negotiation, as well as data scientists to analyse it.
If there is a way to increase the total number of tokens spent on negotiations while keeping users satisfied they'll find it.