These were the only details that really prodded me:
>Yuuki considering Kyouka's rewards as satisfying compensation for his service
Dude, she admitted that her remuneration is involuntary (in that sense, she reminds me of Youko/Japanese Lesbian Catwoman in DtB 2 having to kiss men). Consider her feelings there, why don't you?
>Yuuki silently wanting revenge for his sister when a body wasn't even confirmed
The least he could request was confirmation from Kyouko's superiors that she's dead. If he wanted to entertain the notion that she might still be alive, ask to be able to LOOK FOR HER.
>Yuuki trying to back out of being the 7th Unit's dorm caretaker, AFTER having agreed to help
Boi, your shaky resolve is sickening. Kyouko saved your goddamn life, at least show some gratitude for a bit first if you're gonna reconsider.
Putting the above aside, I liked this pilot.