I just finally watched this. Being in the UK doesn't make it easy to keep up to date!
I loved it. Once again, we're seeing a different part of the Trekverse, a few moments in the lives of characters who we would normally never get to meet on the regular shows. For me, that's perfect, and the kind of extra content I'm looking for, as the franchise mixes it up over the next few years, with regards to type of content produced.
I know people are calling this a Picard prequel, but I don't see it as that. Right now, when we don't have any other official content related to anything that takes place in Picard, so I accept that this is the first glimpse of the attack on Mars, so feels like it's setting up the new show, but I don't think it's really done that at all. This appears to take place many years before Picard, so whilst the attack on Mars is certainly a part of Picard's backstory as he heads into the new show, I don't think Children of Mars was setting up Star Trek: Picard in any way. With that view, I couldn't possibly sit here and type that I'm disappointed with the setup for Picard, because this didn't feel like it was trying to be a setup at all.
In fact, I've no idea how one or two people [in this thread] have used Children of Mars to justify unhappiness with how they think Picard is going to turn out...
Anyway, I liked the story here. Very simple. Two kids who seemingly hate each other (the human-looking girl appeared to be the main bully, I thought?), getting into it, too, only to realise that all that sh*t didn't actually matter in the grand scheme of things. Seemed they knew that they both had parents at Mars, too, so probably a little bit more familiarity between them both prior to this story.
I thought it was interesting to see school bullying in Trek, particularly in the 24th century. This style of bullying, anyway. I imagine that there are quite a few people who would recognise some of the things that these girls were doing to each, for example. It felt very real, especially the fight in the hallway that no one was breaking up.
I didn't spot any other aliens in those sequences, but may be going blind! If the co-lead was in fact the only alien there, might we suspect that there was some xenophobia going on?
Anyway, as I said, I really enjoyed this for what it was. Roll on new Trek content later this month!