This has been a hot topic for awhile and I'm pleased to say that GU32 will bring some nice changes. Combat arts will no longer consume ammo with the next live update. Only your auto-attack will use arrows. Arrow damage is also being looked at and balanced so there will be a benefit to using better arrows. Summoned arrows will provide the lowest damage, with vendor bought arrows being slightly better. Crafted arrows will give the best dps, and among the three types of crafted arrows, each one will enhance either range, accuracy or damage. Woodworkers will see an increase in arrow yield for each recipe which will bring the price of crafted arrows down. This in combination with them only being used for auto-attack should make it very feasible to use crafted arrows if you want to maximize your dps. Keep in mind this will only affect the damage amounts on auto-attacks and not on combat arts. CA damage will still be affected by your stats and the tier of your bow. If you have any questions or concerns about this change, I'll try to help.