The more I think about it the more I think we will get a Ritualist with our pets all getting spirit forms. You have to think what Anet can do logistically, so ideas like, swapping places with your pet or totems, or what not may be great ideas but also too much of a burden on their engineering and design team. With spirit animals it's a simple art request. Tell them to take the model for whatever pet and turn it blue and translucent lol. Programming wise the AI is already there (although it's mediocre at best) and you could just have the spirit animal automatically cast a few spells with some spells that are manually cast through the f1 through f3 skills. Disable auto attack on the pet in this form. I think giving the spirit animal five manually cast spells would be a little too powerful. Three would be fine. The pet would hang out at the rangers side like a familiar of sorts. The biggest issue here is that buffs like swiftness, regeneration and protection would be totally wasted on your pet. Maybe the pet transfers buffs to the ranger? In terms of a new weapon I would bank on either 2h Hammer OR Focus. In terms of utility skills they could have wells that summon animals from the spirit realm to do damage, cc, or conditions (whichever design direction they go here is fine as long as we get some sort of ranged AOE utility skills).