Aspect of the Beast is quite niche because its effect is almost never useful. Following on its theme of being hard to find, I would suggest an addition to it: make it reduce the range at which mobs aggro the hunter by a specific amount of yards, similar to the priest and druid spells or stealth but while still being able to be seen.
This would essentially be a class version of the camouflage item that can be crafted by the revamped survival profession and would fit both the Aspect's theme and the hunter's as a stalker that is difficult to notice though not quite invisible like a rogue. Stealth increasing items could even raise the effectiveness of the Aspect so that they are useful for an additional class.