Tweaking the ctrl+arrow key sequences in action lists

Generally, I really like the ctrl+arrowkey sequences for rearranging the tree structure of an action list. Sometimes the results are slightly unexpected, but generally with a bit of fiddling, you can move any item anywhere you like.However, ctrl+left is dangerous - it can actually affect the location of items other than the currently selected one. Take the following sequence:AB-C-D-EIf I press Ctrl+Left then Ctrl+Up after selecting C, I get the following tree:A-C–D--EBThis can get very destructive, and with no undo capability, can be very difficult to detect and fix (where were D and E before?)Thus, can I request that Ctrl+left in that situation instead just moves C to be a previous sibling of its parent:ACB-D-EFor the case where you actually want to make both D and E children of C, you can just select them and press ctrl+right - intuitive, and conforms to the rule of only modifying nodes that you actually have selected.Steve