I'd say there's been quite a good amount of input on this thread for you to start something of your own, rather than wait for us to gather as a community to continue writing. I'd definitely would be more interested on the political aspects of the new universe the most, however I feel like you should start with a "text dump" for worldbuilding and character creation.
Create a drive that only you can edit and give us a link. First start really rough. Write random characters and archetypes with reference images from google that might add a visual towards their appearances and motif. Considering the density of the StarCraft scifi universe I would start writing the world and the plot at the same time, even if you are a 100% Pantser or Plotter.
Creating a character can help you create a world.
King > Castle > Country
Or the world itself can give you a character.
Wasteland > Mental Instability > Fanatics > Mad Max
Either way, choose how you want to mutate the StarCraft Universe and how much to push it away from the source. I'm not opposed towards anything. However, a scifi world would be best for theory-crafting and feedback within this community. Some here hate the thought of fantasy
