These days I'm prefering aluminum for building hunting shafts, and my competition arrows are wood (longbow) but I have built some carbon arrows and used hotmelt no problems (yet) Sure working time is reduced as the shaft can't be heated, and that is problematic. But couldn't you use epoxy and gain working time to give you a chance to ensure that the broad head is aligned with the shaft? Or are you talking about having the blades of the broadhead match an orientation with the fletch?

Personally I believe that yes there can can be advantages to having the blades in a certain orientation, depending on broadhead style. (2 blade or 3 blade) but I have found that having the broadhead aligned with the shaft is the more critical factor.