Meh. Ancient Ancient legs are one of THE worst ways blizzard could have introduced more power creep. There are so many more numerous ways they could have introduced extar power creep, some of them actually interesting (I.E. cube a non-jewelry/6 piece set bonus, add extra cube slots opening up far more builds, move gems to the cube and opening up additional gem slot progression, adding runewords, adding a 7th ability slot, ect).
But NOO, they just have to go with a RNG-based primary-stat increase. instead. Let me see, so now everyone will have, more primary (Vit/Str), more Thorns (Yay Thornssader! and LoN Frenzy barb. And couple other Crusader build... Maybe we can see an actual WD/Barb set in the future using Thorns in an interesting way?), more Armor, and more Res. And, of course, LPH and other healing stats - Not as impactful though.
It also doesn't really solve Paragon Problems - Yes, more Primary through Ancient Ancient means that Paragon lvls will have diminished increase on your dps - But, really, unless you are the son of RNGesus, the dudes with 3k paragon are going to have many, many, MANY more Ancient Ancients then dudes with 800 paragon. So, as it should be, those who play more will STILL have an advantage other those who do not play as much - Even moreso then now, given that they can sacrifice more defensive means due to the increased toughness that will be on gear then now.
Also, looking forward to the QQ of "MY WEAPONZ NOT ANCIENT ANCIENT I CAN'T KILL SHIT CHANGE THIS SHITTY GAME BLIZZ".