Would be very useful and would save memorising sequences of keystrokes or making voiceattack profiles.
For example, it's going horribly wrong and you want to run away, so you divert power from weapons to engines.
Previously you were set to 1-1-4 for firepower, so you hit "up" repeatedly to get engine power. This gets you 0-4-2 and no shields which probably isn't ideal.
If you had the foresight to press "down" first to reset,then diverted power to engines, you now have 1-4-1, but the 1 pip in weapons is still wasted if you are fully defensive.
To get 2-4-0 you need to do "down up left up up" or similar, which seems convoluted.
For example, it's going horribly wrong and you want to run away, so you divert power from weapons to engines.
Previously you were set to 1-1-4 for firepower, so you hit "up" repeatedly to get engine power. This gets you 0-4-2 and no shields which probably isn't ideal.
If you had the foresight to press "down" first to reset,then diverted power to engines, you now have 1-4-1, but the 1 pip in weapons is still wasted if you are fully defensive.
To get 2-4-0 you need to do "down up left up up" or similar, which seems convoluted.