That's not a good solution. This is your problem. It's only an issue in your own minds. Wonder Woman has been vulnerable to bullets since her inseption. After 80 years you want it changed because you don't want to go thru mental gymnastics.
Not only do you want to change how her powers work, you want to give her a new weakness that you can get behind.
That level of entiitlement is ridiculous. It's like saying "I don't like how history makes me look so I don't want it taught in schools because it makes me feel bad". So what? That's a bridge you have to get over.
Where do the changes stop?