When selling for manufacturers items have to be serial or lot tracked. If there is a many line invoice, selecting the lots for each line adds a lot of time as it is 5 clicks to get to the Item Tracking Line screen (click the line, more actions, lines, item tracking lines) then it takes time to select the lots.
Bringing an optional Serial/Lot tracking column to line itself would immediately save seconds per line per invoice. Or even the ability to personalize where the Item Tracking Lines sits, as right now it is unable to be brought to the main menu in the Lines section of a Sales Invoice.
Another improvement is to also have the lots automatically selected based on the inventory method (fifo, lifo) and have the Item Tracking Lines selection be a confirmation page to say 'yes looks good' or ability to edit / deselect the applicable lots.