We may want to rethink the dueling nemeses, because this will often result in very few nemeses existing. Once players establish a base, most of their deaths will be in the same few chunks, probably, so the nemeses will just keep dueling and killing each other, leaving just a few nemeses. Perhaps they should queue up, so that after you kill one nemesis and re-enter the chunk, the next nemesis would be present.

Alternatively, there could be a hierarchy and nemeses could co-exist only if they were different levels. Like one reported to the other. But if they are the same level, then they'd duel.

This currently only happens when a new Nemesis is forced in by a player death and the Nemesis limit was exceeded.

Ok, looked like it was happening every time based on the logs.