You are a Groove Agent One fan, aren´t you? Cubase 6 includes a new version of Groove Agent One with some nice workflow improvements:
Besides the possibility to mute pads, a solo mode for pads was a long time request. Now there it is! I guess it is pretty self-explaining how to use Solo and Mute.
Multi Selection Pad Editing
Parameters can be adjusted for multiple selected pads (e.g. Tune, Pan, Volume etc.). Multiple pads can be selected via modifier key (CTRL on PC, CMD on Mac) and mouse click on the desired pads. Parameter adjustments for multiple selected pads work in relative mode by default. To adjust parameters in absolute mode, CTRL/CMD + click the parameter to set an absolute default value for all selected pads first, then adjust the parameter to the desired value. Pads in a a multi selection appear in a darker green tone. The first selected pad has the LCD focus and appears in a lighter green tone.
Support for Cubase 6 64-bit on Mac OS X
Groove Agent One 1.2 in Cubase 6 is available as native 64-bit VST 3 plug-in on Mac OS X (and PC Windows of course).