Create a script/function that allows you to reverse an open position directly on the chart via drag and drop with a dialog box for options to (1) increase the volume/lot size by a multiple, (2) a stop loss, and (3) a take profit. This should be integrated in the context menu and available to all open charts as opposed to a script that's run on individual charts. The same function should also be available in the 'Trade' tab of the Toolbox.
So thats three fully integrade ways to execute.
(1) Drag and drop the same way MT5 has it built in for ST and TP.
(2) Right click context menu
(3) Function button placed in the open trades tab in the toolbox.