My opinion is always highly subjective due to my personal preferences.
I'm absolutely indifferent to another dozen of Spitfire modifications (blasphemy?

) or another variant of Bf 109 armament (ja, ja...).
I love aircraft which are not so "mainstream", for example, Ki 45.
There was good thread here 3 years ago with excellent contribution of
major.kudo who made nice "infographics" for the subject.
http://forum.1cpublishing.eu/showthread.php?t=229846
http://forum.1cpublishing.eu/attachm...8&d=1479029560
So, my wish beyond 4.14 would be to bring Ki 45 modifications and their armament and specifications closer to real history.