vocab IMO add's depth,complexity and a certain mystic to the piece. It doesn't say "i'm more educated than you"....

"Take a look a Notorious B.I.G...not the biggest vocab but he can deliver an amazin track." - times have changed, it's true that vocab doesn't usually matter, it's the meaning,words and how you use them thats important...but listen to a B.I.G track and then listen to Immortal Technique - you'll see what is expected of rappers now and how much the content has changed,