I liked it better when it was STR only, but we could meld STR in advanced slots and equip slaying accessories.

When they changed to STR/VIT I never liked that either.

Other option: Make Tenacity provide more damage than it currently does----enough to counteract this. This will make it good enough for people to stack it #1, which will also have an effect on mitigation/healing received since Tenacity offers all.