The part of PP I still don't really get though -and much respect to our research team that apparently does- is how much this system could hurt us if it actually got expanded into? I mean in CC's? Doesn't seem to cost that much if it got added to our bubble but I really have no idea.
Never worry; I still struggle with lots of PP and it doesn't help that there are many bugs that affect what you would expect would be logical.
The important thing is that the figures in-game for systems never include the Overhead (though they do, after recent changes, mostly include Upkeep). Every system has Income, from which you need to subtract both Upkeep and Overhead. Upkeep differs for each system (usually between 21 and 30-something). Then Overhead is a flat 62 CC per system (at our Power's size; it is less for smaller powers). So HIP 22281 is shown as Potential Value 20 CC in-game (Income - Upkeep). But on top of that you have to take off 62 CC for Overhead, so it will really bring in -42 CC every cycle (so we lose that). And it will be really hard to get rid of for arcane reasons to do with Turmoil rules.
But the other ones will more than compensate for that*. Of course, systems go from Preparation into Expansion next cycle before they become full ALD Control systems, and they only get through Expansion if we end next cycle in profit (i.e. not in Turmoil). Which may not be easy; but that is a problem for next cycle. Phew.
[*Edit: my quick arithmetic says that if the current top 6 Preps get through to becoming Control systems, overall we will be +69 CC better off, even when one of them is the -42 CC HIP 22281]