The album is damn near perfect. Nas is always on point lyrically, but I feel like he nailed the concept of this album better than he did on Hip Hop is Dead. Untitled definitely felt more like a complete project with a story behind it.
The production was also some of the most interesting Nas has ever gotten. There was a whole variety of beatmakers here, so you had Nas rapping over different kinds of beats but the album still had a unified sound. Songs like "Sly Fox," "Testify," "Slave and the Master," "Louis Farrakhan" and "Y'all My nikkas" all sound like nothing Nas has made before or after.
"Queens Get the Money" set it off beautifully. I had to catch the flow at first because it threw me off, but that song is fantastic. I was like

when he said "I'm Huey P. in Louis V at the eulogy throwing Molotovs for Emmett" and had to rewind the whole thing.
The radio songs ("Make the World Go Round," "Hero") don't even feel like radio songs because of how hard Nas was going on both of them. The third verse of "Hero" is underrated as hell and was like a mission statement for the album.
The tracks from The Lost Tapes II ("Who Are You," "Queens Wolf") could easily be added to the original album without feeling out of place.
This is arguably Nas' most underappreciated album.