Keep in mind these changes are Quality of life improvements, not focused on making Pig "viable against SWF".
-0.3 seconds to execute the crouch action (that means Combat straps is now base kit).
Survivors can't remove their RBTs on the first jigsaw box, unless it's a second RBT, which will always be removed on the second jigsaw box.
Skillchecks from Jigsaw boxes can be affected by Hex: huntress lullaby (unnerving presence interaction stays inactive).
Most of these ideas are focused on removing mechanics that encourage unfun/toxic gameplay, while transferring some power from the RBTs to the ambush attack and the stealth, which are undoubtely the most fun aspects of Pig's power.
Workshop Grease - Slightly (20%) reduces Jigsaw Box Skillcheck success zones.
Utility Blades - Slightly (15%, maybe 20%) decreases the ambush attack cooldown after hitting a survivor.
John's Medical File - Slightly decreases missed Ambush Attack cooldown.
Shattered Syringe - Slightly reduces Ambush Attack Charge time.
Video Tape - Slightly reduces Ambush Attack Charge time.
Slightly decreases missed Ambush Attack cooldown.
Padded Pig Head - Slightly reduced Terror radius while standing (4 meters)
Bag of Gears - Slightly (10%) increases Jigsaw Box Search time.
Moderately reduces Reverse Bear Trap Setting time.
Slightly (1 meter) Increases the distance required to install a RBT (pull slugs away from pallets)
Last Will - Available Reverse Bear Traps increased by 1.
Slow-release toxin - Survivors Hit by an Ambush attack suffer from the Blindness Status Effect for 60 seconds.
Combat Straps - Moderately (96.5%) increases your movement speed while crouched
Rusty Attachments - Survivors hit by an Ambush attack suffer from the Mangled Status Effect for 60 seconds.
Jigsaw's Annotated Plan - Available Jigsaw Boxes increased by 1.
Moderately increases Reverse Bear Trap Death timer.
Interlocking Razor - Tremendously (30%) increases the Regression penalty of failed Skill Checks on Jigsaw Boxes.
Crate of Gears - Considerably (20%) increases Jigsaw Box Search time.
Considerably reduces Reverse Bear Trap Setting time.
Slightly increases the distance required to install a RBT
Tampered Mechanism - Survivors caught in a RBT cannot find the key before searching 2 jigsaw boxes
Jigsaw's prime contraption - After putting a survivor into the dying state with an Ambush attack, reveals the aura of the closest survivor within 32 meters for 4 seconds.
High-quality Straps - considerably (103%) increases your movement speed while crouched.
Rules Set No.2 - While repairing a generator, Survivors caught in a RBT will have their recent repair time deducted from the RBT's total timer
RBTs will activate after 12 (maybe 15?) seconds of repair time.
(if a survivor caught in a RBT repairs a gen for some time, his RBT will activate immediately with less time to remove it)
Amanda's Secret - While at least 4 meters away from a survivor, tremendously (110%) increases your movement speed while crouched
Moderately increases your Terror Radius while crouched (4 meters).
Moderately (15%) increases your ambush attack charge time.
Available Jigsaw Boxes reduced by 1. (Doesn't stack)
Survivors caught in a RBT may find the key on the first jigsaw box (trumps other addons)
Amanda's Letter - When crouched, Auras of Survivors within 12 metres are revealed to The Pig.
Available Reverse Bear Traps reduced by 3.
Available Jigsaw Boxes reduced by 2.