1. The engine FAQs state that there are plans to support any land-based game... how plausible is it that there would be support for realtime gameplay, like SoaSE?
I wouldn't look for this out the door, it would require massive re-writing of massive sections of the code to hand real-time.
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# Is the networking code able to deal with connecting to a non-stardock server?
# Would it be possible to log in/out of a currently running game?
Both of these boil down to 'it depends on how it's coded'.