The new merchants are amazing as tower exclusive merchants, but they could work amazingly in camp. The uniquesmith could make getting certain unique items easier, but for a good chunk of emeralds. The powersmith could be an easy way to level up an item not using the blacksmith and being instant, but by having less power. The gildsmith has the most interesting possibilities because of it being able to gild anything the player chooses for a pile of gold. This can make items like the hungry horror gildable, originally only possible through direct item modification. In addition to these, the enchantsmith could make a new appearance to help the player reroll enchantments and select a "path" to a specific enchantment, increasing the odds for it by paying an X amount of gold/emeralds. The more gold/emeralds, the more chance for that enchant. This can make getting better gear easier, and start making RNG easier to control. Perhaps the enchantsmith could even sell enchantment books so we can enchant our items on an anvil?