Kinetic fist isn't anywhere near as good. Unless you have the associated archetype, dipped into monk, or otherwise have a natural attack. Can you imagine the surprise of someone getting bitten by a high level kitsune kineticist who is using kinetic fist? Or a half dragon elemental astheic who's unleashing their full claw/claw/bite chain (with improved natural attack feats) alongside kinetic fist and Powerful Fists? Which would raise the kinetic fist damage from D6's to D8's or D10's. On top of your natural attack's damage.
I could see that being effective. Still prefer kinetic blade though since it uses your full blast damage.
I honestly don't understand why Kinetic Fist has such a low Blast damage... "1d6 points of damage per 3 dice of your kinetic blast's damage (minimum 1d6)" ? WHY?!?
Kinetic Blade just blows this talent in pieces, because it deals FULL damage.
What are the chances that a PC will fight with a ton of natural weapons OR unarmed strikes, considering that multiclassing into Monk or Brawler would actually cripple your Kineticist progression?
Did someone in the playtest managed to get Greater Two-Weapon Fighting and Improved Unarmed Strike and OHKO a powerful monster to warrant such a nerf or something?