Tried the new quest in Lower with one other PC today, but it couldn't be completed as is. Whatever was supposed to happen in the final room did not, and we had to abandon it.
I believe it has been fixed for the next module version.
I think the Prophecy quest is setting the entire elf npc faction hostile towards the player. I can't really test until the server resets.
I'm also curious if it was intended that this has a quest limit of one?
Confirmed. Attacking the prophet sets other NPCs in Lower Sanctuary to hostile, specifically the Mourning Elves.
As for it being a once only?
The tone of the quest implied as much, no matter your choice.
Sounds like the quest is fixed then. Quest limit of one is intentional. I'll fix those elves sometime.
Fixed.