I quite agree, although some people probably know of me and know what alliance I am in I personally doubt not fake-nicking would give me any more incs, alliances don't ptarget that early anyway so it seems to make little difference apart from pissing your galmates off.
the people in my gal who fakenicked obviously expected the rest of the gal to have some idea of who they were when they reveled themselves as Lesh and Epcylon... the rest of us as relatively new players had no idea and Lesh in particular seemed rather disappointed
Although I would go with a fake nick if I was ordered to by my alliance I would not like it, openness within the galaxy is the best way to create trust and ensure that the galaxy operates as a cohesive unit as it should. Creating suspicions is a sure way to get people exiling out of the galaxy imo.