"Interesting" is all well and good, but it's simply not going to trump DPS in general without the overall game changing. I'm sure we're going to see both looked at, but nothing was said about defensive stats.
The decline in VIT that happens at 60 is more of an acceptance in valuing it less on items that have other stats that are great. That's fine, it's a trade-off. But so many legendaries don't roll VIT or, even worse, they don't roll Resist All automatically, and those with random affixes certainly may or may not roll either. Lacking RA on legendaries can be just as much of a killer for that item as could be bad DPS stats.
Mitigation and damage are two sides to the same coin: you can't survive if you can't deal the damage, and you can't deal the damage if you can't survive.
I hope the devs are looking at both sides.