Hold your horses all.
Adding the P-40F is not at all the same as adding the Ki-43 or Me410. Adding a variant is much easier for HTC to do due to most of the graphics work already being in place.
So, when you whine about this stuff, at least try to compare apple to apples instead of apples to oranges.
Compared to adding an He111, for the same work, HTC could likely add the Bf109G-6/AS, Fw190A-2, Fw190A-9, LaGG-3, La-5, Mosquito F.Mk II, P-40F and P-40N. That might be a bit optimistic, but you get the idea.
Bombers take a lot more graphic work. Multi-crew aircraft like the Beaufighter, Ki-45 or Me410 take more work than single seat aircraft. Entirely new airframes like the G.55 or Ki-43 take more work than variants of existing AH2 standard models.