Managed to watch the entirety of season 2 now. I didn't realise it Anthony Mackie playing the lead role now but he fits the series based on what goes on - although I loved the main actor Joel Kinnaman playing Kovac.
I'd say its a slow burner on how the season goes on - stuff unfolds in later episodes which I found I had to concentrate on pretty closely. I think Po is the best character in the series (his sidekick AI), brilliantly acted and has a warming, funny side to him that mixes well when he cares for Kovac not like AI are supposed to care. It dipped from Season 1 slightly imo, because it felt like they needed to find a reason to keep Kovac going on, doing what he was doing and it naturally takes you time to get into Mackie as the lead because there's no seamless link at ending of Season 1 to 2.
Worth the watch if you enjoy Sci-Fi series that make you think whats going on, with some action involved throughout, obvs. 7.5/10.