From the other thread, I wanted to break this discussion out so we can keep them separate.
My reasoning for removing Nadia: She is a crutch. Removing her allows crafter-adventurer interdependency because adventurers are then needed to go gather tech comps from the mobs. In my opinion leaving her in for so long (and continuing to do so) is a bug in the game. It artificially caps prices for tech comps and it makes the effort of adventurers less valuable than it may actually be.