Whenever the market is topping out and you have a lot of positions open, it is difficult to decide the exact moment to "Close all Positions" I personally never want to do that because it is way too much work to open them up again when the market turns.

That is why I think the terminal needs a "Half" and "Double" option for all open positions (where the "close positions" box is), and options for all longs and all shorts (added to all/profit/loss)