Here's my Orc Theory of how an orc should be skilled:
For a Pet Class Orc:
When the skills are available max out these actives-Unity (be sure you save up jp early, so you can max this one), Cross of Valhalla, Triple Slash, Focus Slash. The skill Body Slam is nice, but costs too much jp for not long enough stun imo.
Here's the passives-Bless the Body, Meditation, Creature Item Expert, Awakening P. Def and P. Atk, Fighter Unit: Melee Weapon, and Vital Unit: Warrior Costume
For a NON-Pet Class:
When skills are available get these actives-Unity (maxed), Cross of Valhalla (lvl 1 should be good), Triple Slash (lvl 1 again), Focus Slash (maxed).
Here's the passives-Bless the Body (max), Meditation (max), Creature Item Expert, Awakening:P. Def and P. Atk (max both), Fighter Unit, Vital Unit, Bless the Soul (max), and Clarity (max)
For the pet classes, because of your regens, your pet will regen mp fast enough to not need bless soul and clarity, but for the non-pet classes the orc's mp will get gobbled up in 3-5 skills with unity on, without clarity.
For Yeti, and Hawk use this model for the passives, and do the same with actives (except the names of the actives will be slightly different but follow the same basic concept)
For all pets, I recommend staying from ANY of the blessings you get for OBing a pet...they're WAY too much jp for very little gain...the only time I'll recommend the blessing passives is if your pet is R6+ and you have nothing else to spend the jp on.
Hope this quick guide helps...I'll get back on at a later date and post my ideas on Pixies.