The ability to sort the bids by bidder's name would be handy so that an invoice is not sent before all of a particular bider's bids are in.

I recently left 1 stamp off an invoice for a bidder because I missed it among several hundred bids from 4 different bidders - this will be seen as "My mistake" so I will send that stamp to my buyer at my expense, stamp and overseas postage so no profit at all for me. - Sometimes it's a bit too easy to miss a bidder when you must go through 4 pages of bids before issuing an invoice.