Planning on making a oni-themed bloodrager, specifically one with the elemental (fire) bloodline that uses high strength and a Tetsubo. Recognizing that the elemental bloodline has quite a few weak powers, I was thinking about trading out most of them using the primalist archetype.
What rage powers would you recommend I pick up if i trade out my 4th, 12th & 16th powers? (Thinking I'd keep the extra speed from the 8th level power)
Depends if you want offense, utility or defense.
Offense: Come and get me, Beast totem line, witch hunter, mighty swing
Defense: Internal Fortitutde, Fearless rage, Superstition, good for what ails you
Utility: Knock Back (great when wizard makes pits, fire walls, or black tentacles), spell sunder
This sounds like the Shugoki from For Honor :D
The Fiend Totem or Daemon Totem would help boost your Oni theme. If you are actually making a Shugoki then Daemon heals you when you kill someone, like with the Demon's Embrace. Fiend gives Gore attack, adds Shaken and deals damage to those who strike you.
There are several rage powers based on Gore attacks for Were-Boar and those related... I could see a GM might allow that for the Oni theme, but that would take focus away from your Tetsubo. Worth considering though.
Other Noteworthy Rage Powers:
Auspicious Mark
Chaos Totems
Come and Get Me
Powerful Blow- Crippling Blow
Superstiotion- Eater of Magic, Ghost Rager
Increased Damage Reduction
Knockback
Knockdown
Low-Light Vision- Night Vision
Mighty Swing
Overbearing Advance- Overbearing Onslaught
Raging Grappler
Smasher
Witch Hunter- Spell Sunder- Sunder Enchantment
*Spirit Totems