I made one for the monk not long ago that hopefully kept the spirit of the class
here.
For the Soulknife, I think the simplest is to take the psychic warrior, drop the psywar's bonus feats, fuse it with the psywar, drop the (ineffective) psychic strike progression, make the starting blade a masterwork equivalent, and allow the soulknife to chose any weapon he is proficient with for the blade's form.
Replace the Shape Mind Blade feature with the ability to reassign the enhancements and weapon form with an hour's concentration.
Expand the list of available enhancements.
The rogue now, I think the
Pathfinder Rogue had the right concept with the change to sneak attack and Rogue Talents, but the specific talents could use refinement and level appropriateness.