From: just beyond the outskirts of Margaritaville
It has pros and cons.
The one "pro" being why the RAF changed from day to night bombing over Germany. Attrition, or more precisely minimizing it.
Unescorted daylight bombing is a relatively easy target for CAP, both in AE and real life. It's not a game defect, it's the way it is. Even with drop tanks (where available), ranges of bombing planes (especially 4E) exceed that of fighters making unescorted bombing raids a virtual necessity in many cases - especially in 1943 and before. I launched a daylight (oil) strategic bombing raid on Magwe with 68 bombers (all B-24D and Liberator II) - 19 bombers destroyed as well as the raid being broken up into three separate uncoordinated strikes (AE does this during daylight too, and not just with carriers). You're not going to conduct much of a bombing campaign with a 27% attrition rate excluding damaged planes. Again... this is how things work, not an AE game defect. Details on the Magwe raid are in my AAR thread (see 4/02/43).
Based on that experience, the decision was reached to fly at night.
Pillager did underestimate the number of Allied bombers in the Mandalay strike. The actual number (in the initial 5/11 strike) is 100+ including Liberators (B-24D and Liberator II), Wellingtons, B-25C Mitchells, even a Hudson IIIa squadron. Pillager didn't appear to factor in the existence of 10th USAAF. As I looked more at this, there were a series of conditions favorable to the Allied attack, >50% moonlight (likely considerably over 50%), low altitude (5000' as Pillager correctly reported), it was known Japanese aircraft were based in Mandalay (though not exactly how many or what planes were there), maybe throw in a good die roll (no way of knowing that). If this had been a poker hand, I may have drawn an inside straight. There were actually three night raids on Mandalay airfield - detail posted in my AAR thread for 5/11, 5/12 and 5/17/43. The 5/17 raid included only 2E bombers.
An additional night bombing raid not mentioned so far was a similar night airfield strike against Rangoon on 5/17/43 (posted in my AAR) involving 58 B-24 and Liberator II of which 41 planes actually reached Rangoon in a series of uncoordinated strikes. In this particular instance, the raid was originally planned as a strat bombing attack on light industry - I quickly re-targed this to hit the airfield based on reports from daily RAF recon flights over Rangoon. Daily recon reports on detected Japanese plane counts in Rangoon have averaged approx 100 planes (all types), the 5/16/43 recon reported 231 Jap planes total in Rangoon. Knowledge of a target being there, plus 96% moonlight, low-altitude (again 5000') certainly helped the end result. It does not appear that cloud cover (heavy over Rangoon) made much difference, but that could be due to low altitude. Pillager may or may not have had flak in Rangoon, my records indicating a Jap flak bn had been in Rangoon though the information is way too old to determine whether it was actually there.
How much of this was luck (there had to be some), skill (which I had been unaware of until after the fact), die roll (not that one can see the die roll and it's probably not worth seeing) is completely open to question.
Having seen discussion on a possible problem in the AE game engine, that possiblity cannot be excluded if a problem actually exists. Pillager and I have exchanged some info, opinions, thoughts, etc. In any event I indicated I would suspend night air strikes until we know what is going on and devise whatever is needed to resolve it. At this point there is no specific HR, no decision on whether or not to have one. That is a discussion still in progress.