Well... neither of these two use Blacksmithing.

Crafted staffs will never replace legendary staffs, because power of staffs is not is damage but in extra bonuses, which crafting items are not great on their own.
And Hearthseeker is preplaced unique bow. Up before HS, I used crafted bows instead, since they were better then any loot. Still, crafting bow is expensive, since sinews are pretty rare. You do not have resources to recraft new bow every level (unlike axes).
Interesting stuff: Extra damage you get from adding Bowstring to existing bow (including HS) will depend on level of Crafting.