I see this suggestion has already been made about a year ago on this board. The Selection View window to the left needs to remember the changes made to width, sorting, column adjustments, etc.
btw, I use this software as my primary info manager, I spents months looking at all the others, trying trial versions, even purchased the Ancestry.com client software. FTB is by far the best and most useful for working with thousands of people and their data. It has the most visually usable interface. It is by far the best out there.