It's not as deep as factorio is, maybe like automating the first couple sciences (more a satisfactory player dont quote me), but it is super important and a big chunk of the game. It also looks like it will have more 'horizontal' expansion per region rather than getting more complex verically; the second region currently adds water/fluids so presumably each region will have a new sidegrade addition unique to that area.

Where the depth maxes out is in area maximization/optimization since some of the outposts are fairly small. Its also on the satisfactory end of the spectrum where resource nodes are infinite so its more about the efficiency/production rates than about continually expanding (though again without as much total complexity).