This is the 97th iteration of a standard issue military shuttle. It has a slight improvement in carrying capacity over TSR-96.
It's a shuttle. It carries thing and people, and beats a space walk. It's not supposed to be fast, or fancy, it's supposed to run without maintenance for decades and just do shuttle things.
It's a shuttle. It does shuttle things. Also has guns because why not? But if you're using a shuttle for defense, you're having a bad day.
"It's a stupid box, and I love it."
— Matt H., Designer
That's it. That's the tweet.