Ooh yes, I definitely recommend a rewatch! Of course the whole mystery effect gets lessened a bit when you already know all the answers, but then again you can pay more attention to all the clues and foreshadowing. Also, if you like podcasts, there's a fantastic episode by episode recap/review called Down the Hatch, it's very recent but already finished. It's funny and has great analysis of each episode. It's full of spoilers so it's specifically meant for rewatchers, not for people who are seeing it for the first time, so a big recommendation for that too :)