Did you guys with poor lights try upgrading to better aftermarket bulbs, such as Osram Silver Star or Philips Vision Plus?
I think I got mine from here (admittedly for E60) but it did help...
http://www.powerbulbs.co.uk/autoexpress.asp
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2018 G30 520d M Sport with M Sport Plus - Mediterranean Blue
Previously: 2015 F32 430d M Sport, 2012 F10 520d M Sport, 2009 E92 320d M Sport, 2006 E92 335d, 2004 E60 530d, 2000 E39 525d, 1997 E39 523i