What fork guards did you utilize and did you have to make a custom bracket? For the future Galfer brake lines come w/swivels too. You can get these but just have to international freight them.
I had definitely considered what you stated about un-necessary flex of the lower brake line on the banjo bolt. I went ahead and bought another fork bracket (item B) and will be putting a cable router right there, this will permit the cables to slide up and down as the fork travels (and that is all mine seems to do). Then at point B I will setup a rigid cable bracket that will run from the bolt location that used to retain the rear fender but will now be used to keep the cables in a stable position. I believe this will be adequate, correct me if I am wrong or you have reservations. I had wholly considered the traditional MX routing pattern but opted against it for a variety of reasons.