*I am no expert, these are my opinions*
Imo, Call of the Wild is optional. I take it because it is a decent dmg increase.
Bark Shield: If you are going melee then it is a must. You are squishy so you need all the defense you can get(This includes dodge rubies and maybe even parry rubies)
Heavy Paws: Makes bears blow useful? I don't know too much about these, never used them as I build hybrid so I didn't take all the melee skills
FYI your build isn't melee it is hybrid, you would be using lion's blow after Rip so it is kinda of melee, but you are using lightning/vortex for the SP.
Since you are hybrid, I would advise you take aura of regeneration as you WILL be using a lot of mana.(you can take points out of boar's blow as you don't use it for anything but the knockdown, so R3 is insignificant)
Lastly, AV/AE will save your life. Renew is a decent heal but AV is so much better.