Don't let due date fields to sync with the card due date by default

In the last few weeks, we had a problem: the card due date was very wrong, when compared with the field that dictates the due date in fact.

Turned out that we had four due date fields in the same pipe, and every due date field had that sync option turned on:

The support team told me that it is on by default.

I see three ways to don't let it happen: 

1. check, on the field creation, if there are any other fields with this option on and note in the interface
2. don't let that configuration on by default
3. remove that configuration for due date fields and let people select it in the pipe configurations