I have decided for a druid as my main and I'm playing him as a part of my frontline, focusing on melee with use of some buffs, cone spells etc. 

What's the classification of druid shapeshift wildstrike attack for specialisation talents? Is it one handed or dual wielding? Does it count as unarmed? I'd love someone to confirm taking appropriate talents and seeing the benefits.

You should build arround the shapeshift but not just for the shapeshift if that makes some sense, because the time you will be shapeshifted is too low.

I go 2h and do fine tanking on Hard. You can try early levels and if if works for yo uget the 1h shield talent.