Gushing Wounds | D4 Barbarian Key Passive

Gushing Wounds is a Barbarian Key Passive with the following effect (simplified):
Bleeding can now Critically Strike, increasing the Bleeding amoutn by your Critical Strike Damage. Overpowering a Bleeding enemy creates an Explosion with a small Bleed over 5s.

Once you select Gushing Wounds as your Key Passive, you can't select any other Barbarian Key Passive. They're considered to be very important parts of your build, so it merits quite a bit of possible discussion.

How best to use Gushing Wounds

Basically this segment will be giving you a rundown on the basics on the "WHEN, HOW, and WHY" of the Gushing Wounds Key Passive.

Questions we would answer here would be like:
How to use Gushing Wounds, as a baseline.
Why you would choose Gushing Wounds over other Key Passives.
When would you consider Gushing Wounds? As a build-around? An "augmentation"?

Gushing Wounds Core Synergies

TBA: When choosing Gushing Wounds, are there "absolute godtier" level synergies you essentially NEED to take?

Related Links & Other Information

Still got a lot to do, a lot of data to track, and how best to present it! Post-launch will clarify alot of this for us!

In the meantime, Related Links:

• If you're here, you're probably looking for some info on the Barbarian Class.
• Related Skill Tree Nodes: Gushing Wounds
• Summary of all D4 Build and Character Customization Systems.