It would be great to have the ability to update the unique key for the custom field to streamline custom values. Since this feature is hidden upon creation, many users don't pay attention to it, resulting in long, non-uniform unique keys. When it comes to adding these custom values to emails, funnels, etc. it makes it difficult to format. Since they can't be edited, it results in having to delete and recreate custom fields with the unique key in mind.

In a perfect world, there would even be a section in the settings that created redirects for old custom values to point to the new custom value.

Yes we have this issue as well with forms making new contacts when "duplicate contacts" is enabled. Any new form that is submitted just creates a new contact, but can there be a way to give each form an option to either honor the duplicate contact option or ignore it. That way certain forms can continue to gather data for contacts that are already in the CRM. This is crucial for us. Thanks out there to the dev team. You guys really do a wonderful job!

I like the idea but you can get this done by deleting the custom field and creating a new one with the name being what you want as a key and then edit the name after creating it. If you are coming back later and want to change the key after you have data in the field you can create the new key and then run a workflow to update the new key with the old key and then delete the old key.