Good points on WDs, if they buff pet HP to scale with vitality then maybe they will be useful in Inferno
I hope they also make frogs viable, they were fun to use
Blizzard 2012 seems absolutely intent on having minions/pets be largely useless, so I wouldn't get my hopes up. Though I am actually impressed with the fact that damage on my followers has come up from the 1/50 or so it was of my own damage to 1/10 or so in late hell. Still, D2:LoD minions these are not.