World reset:
I don't think the dev's are planning for a reset. Nor do I think they are planning not to do a reset.
When a reset happens its probably because:
1) Some sort of data corruption. Unlikely with current raid use.
2) Its easier to reset the world, than to updating the current data to support some change(s).
3) No way, other than a reset, to implement some change(s).
4) When they feel a reset is warranted for whatever reason. (CQ: Haven version 2.0.)