I've started watching this. Like others, I wanted more information on the Civic Republic and CRM than I was ever getting from TWD and FTWD. Maybe that is the wrong reason. However, I'm interested in the character development, and like that they actually have a goal rather than aimless wandering. I sort of get the Stranger Things vibe mentioned, but they are older.
I haven't really seen much yet (S1:03) and I haven't read the spoilers here, but you say that Huck makes a good leader. She certainly has a long way to go in the next 17 episodes because she seems moody, brusque and without any empathy so far. I know she has back-story to that, but don't they all? So, it will be interesting to watch that unfurl. The children seem to have grown up in a protective bubble, despite each having experienced some traumatic event in the past.
I also agree with you that these northern empties seem to be much slower than the southern walkers. Maybe it is the difference in climate?
If these children are eventually going to take on the might of the CRM then they'll need a lot of luck.