Keep in mind to RDM has also been shadowing big classic BSG elements like the Pegasus. Is this his way of shadowing the Terra element being that Galactica finds Earth but its not really earth etc.. Th only thing missing now is the run in with higher powers like Count Iblis and the Ship of Lights etc..
Daniel could be Iblis, thought not likely. Thoughthere is someone pulling the strings, and I think-- now-- that it's Daniel. We could still end up with Iblis popping up before the end.
The ship of lights could have been either the original Kobol Resurrection ship that came with the Cylons to Earth or the Resurrection ship built by the Earth Cylons.