Thq quest, which offers a certain unique reward and a relatively large amount of experience points for a task of its magnitute is redoable. Considering the nature of the reward and the large amount of experience points granted, perhaps only letting those without the reward able to take it would be advisable? Otherwise it may become a rather cheap way to earn very easy experience points, without the side benefit of replenishing the gold supply.
Murpor's Quest
It shouldn't be redoable.
Arkov It shouldn't be redoable.Consider it beta-tested as redoable then. Had one reward already in a container, though, so that may have been part reason. Also, for clarification, by redoable I mean "redoable after reset".