In the last update there have been additions made to the Ladder Reorder Button Behaviour, all of which are very useful.
Two additional ones that I would certainly find useful (especially when trading populus markets), would be to be able to sort by your P&L position (Descending [largest first] and Ascending [smallest first]) as you can do when clicking the One-click screen P&L column header.
This is most useful when you want to close or trade positions to be able to have your largest or smallest P&L in ladder order.
Ideally, click once and it would reorder by P&L (Desc - aka largest to smallest ), but click a second time and it would reorder P&L (Asc - aka smallest to largest).