I also did not know about the dice roller function lol.
I read through the rules, I at least understand most of it! And I also think I can see the 40k inspiration. I have a couple of questions, a couple of suggestions, and then a couple of more specific questions about tech.
1) You mention rolling one or more d6, I may have missed it, but I didn't see how or when you might add more dice.
2) a suggestion, maybe instead of "tokens," it's bonus dice to whatever applicable roll(there's a wide range of things that might need these).
3) when you do roll more than 1d6, are they added together, or is it just more opportunities to get the target number?
4) a suggestion: maybe create a middle ground, a partial success. My favorite TTRPG is Monster of the Week, and in it(and other "powered by the Apocalypse" games), you roll 2d6, add applicable bonuses from stats or skills or what-have-you, and a 10 and up is a success, 7-9 is a partial success, and 6 and under fails. In the context of combat, a full success might let you avoid harm, or do extra damage, or force the enemy into an advantageous position. A partial would be more of a neutral, hit and got hit situation, and a failure would be getting your ass beat unequivocally. But combat in MotW is more abstracted and narrative, less crunchy and tactical.
Another example, rewiring a turret. A success might let you take control of it, a partial success at least you disabled it, but a failure you didn't accomplish anything, and now you have its attention.
5) Maybe add social skills as well, like Intimidate, Charm, Negotiate. I also don't think I saw piloting, although that might just not come up in the kind of missions we'll be doing.
My big tech question is what kind of space flight this world uses. I personally categorize them into Gundam, Star Wars, and Star Trek.
Gundam space flight is somewhat realistic. It respects inertia(ships don't just stop when the engine is damaged), trips in and out of orbit are difficult and expensive, there's no artificial gravity. There also isn't FTL in Gundam, but given the scale of society, I assume FTL will be in play(more on that in a moment).
Star Wars space flight treats most space craft more or less like aircraft, although larger ones function like aircraft carriers. A starship can be controlled by a single pilot, there are fighters, some of which can achieve FTL on their own.
Star Trek space flight treats all craft like naval vessels. They require crew, and are complex to operate. There aren't "fighters" to speak of, although there are smaller, more nimble craft, and little one man dinghies. Ships engage each other at vast distances, sometimes even thousands of kilometers.
Lastly, on FTL, how does it work? In Star Wars and 40K, ships enter a different special dimension to bypass interstellar distances. In Star Trek, by contrast, the warp drive literally bends space around the vessel, to achieve higher velocities than normally possible. The biggest difference is that in the warp drive model, ships traveling at FTL speeds are still physically in real space, they can be observed, interacted with, fired upon. Conversely, they can do all of those things to other vessels as well. Star Trek is my favorite, personally.
There are also wormhole or portal options, or mass effect relays, all of which rely on stationary installations.
Sorry, I've said a lot and asked a lot.