Just a heads up to all the CC devs out there of the following:
Source: MMO-Champion
Glyph of Shred has been renamed Glyph of Bloodletting, and now also causes Mangle (Cat) to extend the duration of Rip, in addition to its existing Shred functionality.
No longer will we need really be behind the target anymore. This should clean up some logic and issues with being behind the target and shredding.
Source: MMO-Champion