My understanding is that beta players have about three different things that other players don’t have: different base layouts, XP base that grows with the player, and Atlas. My suggestion is to roll out these different parts separately when they are ready instead of releasing them all together. Atlas is huge and will take a long time to get to where PG wants to mass release it. If you can give everyone the new base layout, it will at least give the others something new. Running the same base layout gets really boring.
P.S. I can’t tag Atlas in my post.