So, it's an expansion, and the details are darn slim at this interval.
Why wait? Let's try to guess what will be in it!
A feature guess: a secret research line at high cost that reveals a limited number of shadowed fast-travel gateways between planets. Kind of how in Star Control II, there was this secret green hyperspace that had a small number of shortcuts through the galactic arm. Now you can leapfrog around 16 planets and backstab the AI!
So, yep, a Super Secret Exo-Galactic Highway System! Courtesy the Ariloulaleelay. Definitely gonna happen.
Your turn: what ridiculous and untenable idea do you have that will surely be unveiled in this next expansion, and how hard is it for you to wait for it?
(Hey how about bringing back a minimap in the corner. You can make it shadowy if you want.)