Projects that use the Direct-Link functionality are based on the Premiere Pro file format, which is .pproj. These files can still be opened using SpeedGrade CC. You can extract looks in the same way as stated above for the .ircp format.
To repurpose any projects that use Direct-Link functionality, you can open these using Premiere Pro CC 2014. Also, looks that are present in SpeedGrade and the Direct Link engine are fully functional inside earlier versions of Premiere Pro CC 2014 which can be installed from the CC installer by searching for earlier versions.