Custom headers per recipient using SES API SendBulkEmail

Are there any plans to support custom headers per recipient using the send_bulk_email API? The Yahoo/Gmail requirements regarding bulk senders are already in effect, and using the send_email API is impractical when you need to send hundreds of thousands of emails.

I would like to define a Link-Unsubscribe header with a different URL for each recipient. I was expecting to have something similar as "ReplacementTags" and "ReplacementTemplateData" for the headers.

DefaultContent={
        'Template': {
            'Headers': [
                {
                    'Name': 'string',
                    'Value': 'string'
                },
            ]
        }
    },
BulkEmailEntries=[
        {
            'ReplacementTags': [
                {
                    'Name': 'string',
                    'Value': 'string'
                },
            ],
            'ReplacementEmailContent': {
                'ReplacementTemplate': {
                    'ReplacementTemplateData': 'string',
                    'ReplacementTemplateHeaders': [{...}]
                }
            }
        },
    ],