1) MORE THAN JUST EXPLORABLE AREAS! If its just something you'll be done with 30-60 minutes then its not really worth your time.
2) Possibly Activating some of the deactivated armors i keep hearing about?
3) maybe 1-2 new weapon styles of each weapon? (sword, hammer, staff, etc.)
4) New monsters, dont feel like running in their if its all just stone summit, which it looks like from the pictures so far.
5) Wasnt it actually 2 new explorable areas instead of just sorrows furnace? I cant remember.
6) Maybe something actually worth going there for, like how UW has the spider pet and FoW has Fissure Armorsmith, maybe like a..... Uber weapon smith, maybe he'll sell like..... fissure weapons?

7) other hopes to be added.