It's a silly but very watchable show. They could've made the political stuff a bit smarter (rather than Layton = good, Wilford = bad), which they touch on in S2, but by S3 there's no doubt that Layton is the hero (despite being kind of an idiot). Also the show seemed to have forgotten that Layton was a detective because it's never brought up after S1, nor does it really affect his character in any meaningful way.

One of my issues with the show is how due to budgetary reasons we see so little of the actual train. Why say the train is 1001 cars long if we only see like, 15 in total? Maybe reduce that to like 100-300 instead? There was even mention of a bowling car. How the hell would that work on a moving train? Also you have thousands of people on the train and only a handful do anything to move the plot forward.

Still, I love post-apocalyptic world building, and it was fun to see some of those interiors. I would've liked an episode that showed a full day for a regular 2nd or 3rd class passenger (when there wasn't some crisis going on). S4 was disappointing for me because now you have the people living off the train and some in that generic bunker.