Rogues don't get enough feats, so they should get granted feats Hamstring, Improved Feint, Nimble Fingers, and any Skill Focus. Uncanny Dodge should be 30 sec and Improved should be 1 minute. Rogue Traps can't be pick up once placed, can't be put on walls, have a small activation range, don't do enough damage, take a lot of part to make, and you only make five each time. This need to be fixed. Defensive Roll need to Activate at 50% Heath. Slipperymind should work for all will saves not just enhancements. Master Mechanic is a ranged prestige class but Wrack Construct and Smite Construct are melee attacks. Repair Construct and Skill boost shouldn't have shared usage.