I finally finished Code Geass, including R2! It did have some issues with writing, of course, but I still had a great time with it. I often get nostalgic 2000s animes like this (and the story beats and character arctypes that come with them).
On this subject, I've also started Back Arrow, which was directed by Goro Taniguchi (Code Geass) and written by Kazuki Nakashima (Gurren Lagann, my all time favourite!), which has a lot of callbacks to 2000s animes, and even many recuring character archtypes from both creators that make me happy (I've seen Ryuko, Galo, Euphemia, Shirley, Rivalz and Llyod so far).
I'm not completely done with Code Geass though...