Person of Interest is the most maddening show on TV.
Maddening in that the "case of the week" episodes are so bog-standard CBS procedural that I have a hard time sitting through them... but the mythology episodes started approaching and now regularly hit Quality Television.
That said, I think this week's episode (which I thought was pretty damn great, see it if you haven't yet) probably emphasized why you didn't see a thread for the show recreated on rerolled.org. It matched the vibe of Season One - violent, conflicted, grim - and finding out that the show's creator wrote and directed it made all too obvious that the changes in Season Two - love interests for the cops! adorable dogs! smiling! - was the show getting network noted into something else.
Aside from said network notes, my biggest issue is the Harold arc. You don't hire Michael Emerson to do "naive tech guy", but the show really seems like it is sticking with its long con on the character - we probably won't find out his actual backstory until deep into Season 3, and the backstory on the machine into Season 4 (the longer they delay explaining what happened to Nathan and Finch, the more I am convinced that the machine was responsible for their death/injury, Finch has essentially been enslaved by it for the entire show, and the series finale is them destroying it).