Hi,
the inspiring banner warrior trait
http://wiki.guildwars2.com/wiki/Inspiring_Banners
that should increase banner range from 600 to 900 doesn’t work.
I have tested the range with longbow and it does not increase the range to 900!
(I put banner, then go back until i am in range 900 of arcing arrow, and i don’t get the banner buff, I stop receiving it about half way there… so i think that the range is even less than 600…)