Accuracy of the block display was a sliding scale from very accurate to pretty good guess depending on your seniority. It is not something that is life changing but it did provide a warm fuzzy on "did I bid enough lines".
Usually I spend a lot of time on my first 20 choices, not so much on my next 20. In a normal month it works great. For a Thanksgiving month that was not a great plan. Had the block display worked I would have caught it. Again not a big deal, but it was a nice deal, and it don't cost nothing. To bad its gone.