Earth is the Center of the Universe: Severely averted. Earth is an unknown backwater somewhere out beyond the ass end of the Periphery, and has all the galactopolitical significance you would expect a world which, having once reached its own moon, gives up on space travel beyond its own orbit entirely to have. In other words: none at all.
(The only revelation that might change this even a little is that it’s evidently the planet that the Precursors got Pseudoeldrae archaea and the rest of the greenlife family from. But, honestly, even that’s mostly only going to be of interest to biologists.)