After lengthy playtime, I found that holding up on the d-pad supplies full power to a system, while holding down removes it, affecting weapons, gravity drive, engines, and shields.
In my experience developing similar systems for game interfaces, having a direct control to allocate full power with a single button press introduces both simplicity and challenges. Integrating this method required rigorous testing to ensure that power distribution was both predictable and responsive under varying gameplay conditions. I found that managing the transition between systems demands precise calibration to avoid inadvertent energy surges, which could affect balance. Overall, though, the convenience in gameplay provided by this feature outweighs the complexity involved in its implementation.