Users on the Battle.net forums were discussing that the buff to Inspiring Presence was too strong.
"Inspiring presence at 4% is too much. it completely invalidates any life regen mod on gear as any vit/%life roll will always yield a far greater life regen than the actual life regen roll."
Thanks for the feedback! Based on discussions we’ve seen from players testing Inspiring Presence on the PTR, we’re going to go ahead and change Inspiring Presence back to its previous values. In a future PTR build, it will return 2% of your maximum Life per second instead of 4%. This is being done to keep it in line with other Life regeneration skills.
*Edit* I should note that we're keeping the part where it will buff your allies.