So seeing that around a 20-25% of the story is done (last time i checked) for the rest of the story here are a few suggestions. you do some stuff go to more Axum structures and learn about what happened to the world tree. Then, you go to the world tree once you have removed all the blight along the way, then it tells you how to cure it ot it makes a baby world tree or something. then the Axum wake up and the tailings come back. You/other colonists and the Axum/tailings fix the Axum communications array and contact the architects (maybe the PDA tells you what Al-an told robin as robins PDA probably sent all information on the achitects to the communications tower) And the Axum show you what the architects look like then the colonists realise that they are the same and appologise to the axum. (and also realise that Alterra is pure evil and corrupt) then you contact the Architects and Al-an and robin come to the rescue is a massive ship and beam aboard all the wreckage from the cicada and fix it with your help and also recover any lost colonists (through the use of architect technology) then maybe give us a chose of if we want to stay on the plannet and help the axum rebuild, go with Al-an and robin and whatever is left of the Architect society and explore or go to zezura. then Al-an drops off the Cicada and fixes NoA and then you go to zezura and build a colony there. then subnautica 2’s sequel begins. (name suggestion is Subnautica 2 pioneers or Subnautica 2 Frontiers)