when you see how quiet BRU is throughout the day I would start filling in these slots before expanding night traffic. I see that many leading European airports are closed at night (see LHR to only name one & I believe FRA may also be one). What makes BRU so different and so critically employment dependent that there is absolutely no other choice but increasing night T.O. on 20. And why is all this T.O. traffic systematically over us on Sundays between 5:12AM and 17:00?
Soddit,
I would say, they are the most densely populated ones for taking off a/c still at low altitude, thus when noise is the highest and most disturbing. The rotate speed will be lower than on 25R and therefore climb rate will be affected. I have been overflown by a/f taking off from 25R since I moved here and have pretty much accepted it, although it may be noisy, as well.