Power can't be balanced around an easily farmable currency - price tags can only balance the amount of time it takes to get the item you want. Any noob in a Wolf can fly around picking off lone pirate ships and eventually save up for a Hyperion. It needs the FP cost increase to keep that noob from having a fleet of 14 of them due to the fact that he simply farmed easy fleets till he got enough money. (Yes, I know stations won't be selling that many but you get what I am saying). In addition, is a "noob" as you call it farms money to get these hyperions, when he gets them what happens when he starts losing them? Unless he has found a way to make money with the hyperions then he's going to be right back where he started. This is called investment, and you seem to not understand this concept at all as its consistent throughout the entire game.
Alex has stated the Hyperion's power is cruiser level so it needs the FP cost of a cruiser. The price tag is nearly meaningless since money is so easily obtained in the current campaign.
You're arguing within an incomplete campaign. FP is the same, an incomplete mechanic. Remember that eventually FP will be capped at 50 with skills to move you up to 100 (meaning you'll be able to grind for FP to a point). I don't like a frigate taking up so much FP, that was the hyperion's main advantage, high power in low FP. Also, you forget maintence costs, and its low cargo, fuel, extra personell counts also act as balancing factors vs cruisers. Its very dependent on other ships for supplies.
You're entire argument basically hinges on money being completely irrelevant which makes no sense at all, so...
To top it off, we need to take into account actual non combat and combat effectiveness. Or do you think the atlas should be made 2 fp because thats it's combat worth?