Other options are shorter auction periods, letting the borrower decide, if there should be an auction, or letting the borrower close the auction prematurely.

Speed of funding: If there is a set auction phase then this delays the payout to the borrower, even if it allows him to profit from lowered interest rates.

In the second chapter, based on Game Theory and the seven suppose in the Benchmark Model, the bidding strategy of the bidder in the four standard auction is elaborated.