Honestly, the whole places feels empty. They must have taken ages to design it, it looks beautiful but there's nothing there.
Miasma? More like my asthma haha! [spoiler]*wheezes with laughter [/spoiler]
The palace is great, the rest are forgettable. The best location is still Europa though.
Miasma. It has a nice place to farm kills kills for the bounties (in the middle where those 3 groups of scorn constantly spawn in).
None of the above