Yeah it is the highlighted system on the power wheel.
I've removed the second Base Perf. display. I thought it might increase clarity in regards to the numbers, but it does look better without it:
The list on the right is a breakdown of modifiers though, if I get rid of that the Engineer won't know what's affecting the net/final performance.
I think adding some flavour text would be nice, I'll look at incorporating that into the System Status pane as I continue to build it out.
We decided that heat would be directly related to power usage, so 1 power used = x heat generated. This makes the system easier to understand. Having a number, like a recommended power level, which affects heat generation is, I think, an unnecessary complication.
With the current system we reward you for generating more heat (using more power) because the amount of heat per unit of power does not increase, but the amount of performance/damage per unit of power does (at least it usually will, it is based on the performance graph).