Supreme Commander had mod support during beta, however since i wasn't part of it i don't know at what point it came.
that said, GPG has let the Moho Engine grow and mature so it's perfectly reasonable to see a good amount of modability this early (after all, the Moho Engine was around for a looong while before Demigod).
GCFL, even though Stardock is publishing DG (god bless them for it) they are not making it. you really can't compare SOASE and DG as they were made by different developers.
back on topic; good job Sorian! it picked up Console++ straight away.