It looks like continue with throwback retro bosses atm. 6.1 world of darkness scenes teased some stuff familiar to old school FF fans. Yoshida once said in interviews that even worlds from other FF games could be possible in the future, while not confirming they ever will, the story can go anywhere at this point.
But in 6.0 finale they name dropped a bunch of locations on the Source that we haven't visited yet, so probably staying local for a while yet. IDK how to make new bosses seem threatening after all the stuff our character has beaten so far. Most of the main characters on the hero side are written too strong because fear of removing fan favourites I guess, so only nobodies are dying.
Maybe written into a corner where we keep slaying the monster of the week and nobody believes we are ever in real danger. It's a really hard problem to solve now to give any weight to actions and credibility to enemies. It's like 'reset tv' where everything is always fine and back to normal by the end of the episode. Events are basically isolated in their own time bubbles in this MMO format, no influence on the world at large.