Eminem hasn't totally stepped away from producing. He'll get behind the boards for Slaughterhouse, Yelawolf, and he still produces a lot of his own material, but that's about it. His signature dark beats of heavy bass mixed with eerie piano were featured on songs like Jay-Z's "Moment of Clairty" and "Renegade," Nas' "The Cross," and Jadakiss' "Welcome to D-Block," as well as a number of 50 Cent, G-Unit, and Shady Records artists' albums.
Still, it feels like people forget Eminem produced awesome beats like "Way I Am," "Patiently Waiting," and "'Till I Collapse." His sound has changed since the early 2000s, but he's still a solid producer and would bring something different to the table than the current trap sound.