To make AHII sell as a boxed game, it must become entirely viable as a stand-alone sim.
To do this would involve adding a ton of stuff to do off-line, improving the graphics, tweaking some elements to be more realistic, adding, um, video and storylines, other "candy", and otherwise massively revamping.
People playing AHII tend to be HARD-core into either the ACM, GVing, or the land-grabbing game, or all three. We don't give a darn about graphics when we get into a dogfight. We don't give a darn about the historical nature of what we are doing except once a week on Fridays. This is the BEST ACM sim out there but not nessecarily the best "immersion" sim. And the latter is what would sell on store shelves.