Icewatermetallik
TheEastisintheHouse
I agree, something like 12 songs is a nice spot. Would love NaS, AZ and Premo. As for other features, I don't know. K Dot is hot right now and he shouted out NaS for the Super Bowl love. Maybe someone from the 90's that fit Premo's sound. A posthumous Guru verse would be cool like Ziggiy said. Again he basically did "Magic 3/KDIII" with barely no features. Maybe NaS pulls a "Illmatic/Lost Tapes" and this has minimal features.
Yea, if he has any QB features I'd like to see Havoc up in there, of course AZ or Cormega too. Large Pro maybe?
Outside of QB, maybe some Wu dudes like Meth, Ghost or Raekwon.
Call o Da Wild, L the Headtoucha, Godfather Don, Common