What they mean by "change the damage calculations of tanks"?

[Xyphon]

Even though looking at this I could easily see them doing exactly what they did for ninja, making vit be a source of damage for tanks. Though, I highly doubt its that simple. They mentioned changing the calculation all together, which makes me think of WD and stat weighting. Its even possible they ment how secondary stats effect over all dps. Remember how they nerfed DET in 3.0 (which effected over all white damage *auto attacks* that people always forget about). So its possible they could scale those as well.

I'm also wondering if they ment damage in terms of mitigation. Guess I'd have to see the raw Japanese to make sure those no mistranslation.

[Alahra]

They mentioned changing the calculation all together

I'm relatively sure they mean adjusting the damage formula for tanks in some way, which could mean a lot of things, but since they mentioned it specifically in the context of STR and VIT melding, the safest bet is that they'll be modifying the way tank main stats figure into damage. Changing Weapon Damage or secondary stats wouldn't do anything to discourage melding, which is their goal.