I always disliked the look of the 1100 beak and grafting on the 1150 one is huge improvement.
I never saw the point of the Adventure beak extension and would have preferred my GSA not to have had it as the 1150 beak looks better without and it just seems like a completely pointless piece of kit.
The whole unit came from Germany at one point and after passing through several hands I got it . The ADV beak was on it and I like it , not sure it would have looked as good without . As for indicators there is a small piece of flat bar about 5ins long with a 10mm slot cut in one end and it mounted to spare hole beside headlight . It's not the finest but when all mounted its cant be seen .