Personally, I hope (and to an extent, believe) that the theme will be Greek / Roman inspired. For a PvP angle, it would make sense if A.Net wishes to add larger scale battles to GW's list of features. Also, public PvP "Gladiator Arenas" could make an entrance as well. In the PvE's corner, you could have a story about Senates, betrayal in the families, etc. It would be easy to think of some new classes, like Pikemen or Summoners.
It would be a direction I definitely wouldn't mind seeing, if not for Chapter 4 than for a future chapter


