As Bobby said, most of the planets in The Force Awakens are simply new additions to the galactic map in order to expand the universe (pun intended), just like the prequels added a bunch of planets, but I don't think they are meant to obscure previous planets or mythology.
After all, the new cannon map includes planets from all three trilogies.
Oh, have any of you started reading the new Journey to the Force Awakens short stories with background characters we've seen in Maz Kanata's castle (and constable Zuvio from Jakku)? They're great tidbits, although I've finished only two so far, but they are great thirst quenchers before TFA is out.
Prequel era stuff gets mentioned in them too.