Maybe I'm alone in this, but "initial grind" is until you have the HQ up and running with the first three teleportation researches done and the module hacks. At the same time finish the Hatikvah storyline so everything is waiting for you to start the other two plots...
Between this point and "playing God" is a 200 million gap before your first operational Wharf, which is the "playground" (at least for me) with the win or loose choices to reach there...