I see there is a new picture of the production wheel. It took a while to spot the differences.
Anyway, one simple quick suggestion that I think you guys might like to know about...
Regarding the dashed line, it represents where you are profitable. I imagine it moves as your economy changes. I also expect that you can select deficit spending if you want to. Now here is the suggestion, make it so that if you are holding ctrl or if you have a readily available option button on the gui, so that you are unable to drag the pip out of the profitable section. Thus if you are not holding ctrl or don't have that option button selected you can do deficit spending. If you are holding ctrl, then you can quickly and easily drag the pip to the profit line by moving your mouse beyond the line. The pip has to stay in the circle, so you get instant most efficient spending. No fuss no muss.
Let me guess you guys already thought of that? Well just in case here it is.