We reached 30% of our goal!
I'm afraid of indirect multiplayer due to the simcity disaster. If anything, it will be an option you can enable for your game but is in no way required.
Well, Sim City was a disaster because they made lots of terrible decisions.
(despite being a disaster I still found it awesome to play online with a friend while chatting on skype)
As long as one player is the host/dedicated server with a limited amount of slots instead of some kind of forced online system tracking your every move, it should be fine.
And while I'm fantasizing about wicked ideas.. Imagine having a weekly newspaper with news from the homeland that affects you indirectly, with articles about stockprices, scandals and dwarf of the week, dwarf-sudoku, obituaries (where the death of your own employees show up) and letters to the editor (which players can write).
Would serve great as explanation for falling gold prices, new demands for gems etc.