Additional fields/columns in posting/cancel tab: qty posted at lowest price & next higher price
It often happens that someone resets some items on AH and then someone else is posting a very low qty at a much lower price. if that price is still above your minimum price you would post always at that low price and there's no way to be able to see such scenarios( adjusting minprice just isn't viable in all cases)
If there would be an additional field in posting scans showing the total qty at the price point you would post and in best case another field showing next higher price you would have much more insight to prevent posting at current lowest price if it's only a low qty and next higher price is much higher.
If you could even build some logic in auctioning operation such as ignore auctions with total qty less as x or x% under next higher price it would give us much more control