I'm not sure I could give the Half Strike feat an unmitigated green, because its debatable that it does what its intended to do.

I'd put into the guide a note that the player should check with the DM to determine if they can actually *attack* into the adjacent squares with their reach weapon - if so, its a good feat for reach users, if not its bad feat - avoid it, and a better solution would be a feat that allows quick shifting of soulknife's weapon type if opponents close in.

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Info:
https://www.d20pfsrd.com/path-of-war...strike-combat/

Haft strike specifies 'threaten' the area within reach, but does not specify the ability to attack into it. (Historical note: Playtest version of the feat did specify attacking into the area).

While pathfinder general rules do say that you threaten any space you can attack into, they do not invert that and specify that any space you can threaten you are allowed to attack.