Dislikes:
* PTO and Eastern Front
I actually like the fights and implications of these fronts, but the limitations in planesets means that no matter how much the staff changes the scenery, it's always the same planes vs same planes. I'll certainly be enjoying it more if some more gaps are closed in the JP/VVS plane set.
* Western Front featuring multiple Allied forces
Something like {USAAF+RAF} vs LW - against an assortment of all the turners and dragsters gathered to the Allies, the LW has to fight with essentially two plane types. Having to fight a clog of P-51s and Spit9s, Hurricanes and Typhoons in one sector, with only a 109 and a 190, is really a nightmare. (Besides, couple that with the typical 3:2 Allied advantage in numbers, it really gets tough).
..
Anything other than that, I like.
I especially like BoB of 1940, and Mid-war North African/Mediterranean setups.