Yeah I didn't enjoy 0079 until they went back in space(last 10-15 episodes), and I didn't like most of the characters(stupid english voice actors).
Kamille becomes a much better character as the series progresses(especially after being "corrected" so many times, and his experiences with Four).
Colony Drops were an awesome/creepy idea. Considering how ther aren't any asteroids in earth's orbit it's kinda hard to use any other massive object. Plus there were hundreds/thousands of colonies and they most likely used older/abbandoned ones. Plus the asteroid in Char's CA was a colony/minig facility.
For realism i mainly meant how they always seemed to repair and re-arm themselves so quickly when they didn't have any support most of the time.