Especially when those albums are short and w/out filler. Which most of the ones you named are.

And you named a lot of my favorites. This is one of the main reasons I was always such a big Common fan. All his albums were supremely focused (for the most part at least) because he honed in on 1-2 producers and vibed with them for the entire album. It creates a cohesion that can't really be realized when you're working with 12 producers on 12 tracks. No matter how hard you try.