we have to keep a few things in mind here:
- the poll is so close not because half the people are really excited about general improvements to the game, but because they do not like the Ka-50.
- this is a forum with mostly westerners, and i bet you if the Ka-50 in the poll were changed to an F-18 or even AH-64, the poll would lean much more heavily toward the flyable rather than toward other major improvements.
- they have probably already started developing the Ka-50, and i would guess that they have put a lot of time and resources into it so far. changing their minds and getting rid of it now would have made all that work a huge waste of time.
- a Ka-50 add-on would most likely still have lots of little improvements and tweaks to other areas of the game, especially ground warfare (since it is a CAS aircraft).
- the Ka-50 is supposedly easier to model than most other aircraft since it shares a lot of avionics with the Su-25T, and there is more demand for it in the CIS than shown by this poll.