For warrior's defensive skill as opposed to Hallowed Ground, I'd suggest a new skill instead. It can have this effect for
example:
"Creates a clone of yourself with
100% of your HP and
200% of your enmity for
15s. While the clone is up, you cannot be attacked."
SE just has to change the value to make a balance. This might not be as strong as Hallowed Ground because the clone can possibly die faster than expected. But, it's still a very potential skill and it gives you a new play style.
P/S: If SE ever reads this, come hire me lol I'm jobless now

P/S: It sounded more like a Ninja's tank skill instead of warrior's xD