Was up the day before Xmas when HT came in, fired up the bottle rocket sleigh, and killed the lights. That brief half hour or so of night was a highlight of AH2. I upped a 110 (the black skin) and shot some lancs down. Very enjoyable. No marauding packs of 51s and Typhs at 38K alt. Just me and those bombers. (and HT in that abomination he called a sleigh. Oh, and a bunch of guys who started squealing like stuck pigs the moment it got dark [I mean, literally, the very moment it got dark]). Fun stuff.
Bring back night, and add some weather or at least overcast conditions. Flying into the sun taking off and flying back into it when landing does suck. Please. Maybe the cure for what ails gameplay is night. It'd certainly suck the momentum out of the horde (I think).
My $.02