No nights please. 
 People have this weird fantasies about gaming fun that somehow exotic, abnormal environmental conditions will add to realism and fun. 
 I play IL2/FB/AEP on a normal basis and can't believe the frustration I have to go through to find a decent gaming room. Dusk, dawn, night, poor visibility, rainstorms, super fog, super ack fire, etc etc....
 But the bare truth is 90% of normal operations were literally under "normal" conditions - daylight, acceptable visibility, good weather. 
 Harsh weather, storm, extreme fog, night time and etc. abnormal environmental conditions were reasons to cancel flight operations. Night time was a theater for specialized planes operating in pitch-black darkness equipped with special gadgets and gizmos.
 Sometimes(like maybe once a month in my case), fighting in night time or storm fronts can be fun, but having it as a regular part of arena gameplay just simply cuts down my playtime significantly.