To people that think job switch in dungeon will be abused: That's because the dungeons were designed in a way that abusing the job switch at certain points would allow you to optimize your party setup and reduce your clear time for bonus chest that drop some of the best gear available. All of that is gone in 2.0 so any comparison by saying that it will be abused again is just silly. The only real abuses that we see so far in DF are jerks who force speed run on newbies, people dropping out b/c they didn't get the dungeon they wanted, and gold farmer doing suspicious things that no one but SE can tell.