I dont know how much they cost, but Dre HAS to come back big or its not going to work for him at all.
He's always going to have his fair share of critics. He's a game changer.. and the reason why most are complaining is because he's not really doing anything different to the norm this time around. In my opinion, he changed the direction of rap with The Chronic album, and then again with the 2001 album. I Need A Doctor seemed to be more of a Dre tribute by Eminem - which is why it was rumoured to be a Recovery leftover. It doesn't sound too different from the Recovery style either.. so its been done before.
But as im predicting. This will be a much more mature Dre record. No acting like young adults anymore, its about leaving a lasting impression and passing on the torch. A musical album rather than a rap album. Everyone cant be pleased by this and so the Dre fans that want a rap album will be critiquing his new material (note: still need to hear the 2 collabos with Swizz Beatz).
Dre has evolved. He doesnt have Batson, Storch, Elizondo by his side anymore so we can forget the 02-06 era. Mel-man should be back. He's also working with Mr. Porter, Dawaun Parker, DJ Khalil, Nottz, Focus..., Hi-Tek (i think), and others... Wikipedia says Elizondo and Batson are still Aftermath producers... but since theyve not really co-produced in a while, i doubt they have any new material made for the latest version of Detox.
As for singers on the album, not rappers... he should definitely get Tiffany Villarreal, Nikki Grier and Marsha Ambrosius in the studio. Another MJB collabo would be good.. and i'd be pushing it if i was to ask for a Truth Hurts collabo - that would seem kinda dated though since she was an '02 signee. Marsha on the other hand is back with her latest album.. and its one of the best things to come out in a long while.