Adastra is nicely written and even its flaws, yes, they are some, it's one of the best VN ever.
I disagree with your judgment on Marco. No, he's not waiting to have things fix on purpose.
You're human. You were abducted on a place you don't
- know the language
- where it is in the galaxy
-know anyone able to help you in the place
you know nothing about their technology about almost everything ( I guess plumbery is quite universal...)
- where to go to get some help, you know nothing about society
- have any money
In fact, you can do nothing. Your only hope is to trust Amicus and follow his lead.
And his ass.
But beware.
Nothing gets close to the Emperor's ass.
( Nothing, not No-one...)