It would be nice to have other boxes to work with.
Like if you wanted to have a set of position group rankings, like O-line. Or even just for sides of the ball offense vs defense.
Maybe under the current 3 boxes, you could have 3 other boxes to fill up. Then you could compile those to create the final manual priority list and draft order.
I'd just allow for dragging to and from the manual list. So if you were looking for an
o-lineman to draft, you'd just click to add all of the ones you were interested into the manual list as usual, then drag them all out into the other box, and get them sorted. Then drag them back into the manual list for the overall draft order.
I think it would help to evaluate drop offs, like how much worse is your 5th option that you'd have to take in the 3rd round, compared to your 7th option that you could get a round or 2 later.