This will not remove the negative quirks but it will remove all negative debuffs for most of them. Color of Madness DLC required.
Permissions and credits
Credits and distribution permission
Other user's assetsAll the assets in this file belong to the author, or are from free-to-use modder's resources
Upload permissionYou are not allowed to upload this file to other sites under any circumstances
Modification permissionYou must get permission from me before you are allowed to modify my files to improve it
Conversion permissionYou are not allowed to convert this file to work on other games under any circumstances
Asset use permissionYou must get permission from me before you are allowed to use any of the assets in this file
Asset use permission in mods/files that are being soldYou are not allowed to use assets from this file in any mods/files that are being sold, for money, on Steam Workshop or other platforms
Asset use permission in mods/files that earn donation pointsYou are not allowed to earn Donation Points for your mods if they use my assets
Author notes
This author has not provided any additional notes regarding file permissions
File credits
This author has not credited anyone else in this file
This will not remove the negative quirks but it will remove all negative debuffs for most of them, it also removes the random chance to get a negative quirk when returning to town.
NERD STUFF: This works because when you remove all debuffs from a quirk it leaves an empty label when hovering the mouse over it. And because I removed all incompatibilities between quirks you can get "tough" with "fragile" but you will only get the buffs from "tough" and you can think of "fragile" as a placeholder now.
Having "tough" and "fragile" with this mod at the same time is like saying "I'm fragile... but not that fragile...". I played too much Death Stranding, sorry.