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In relation to this discussion: https://xenforo.com/community/threads/custom-thread-fields-form-position.133597/

The ouput display order for custom thread fields is configurable but the input display order is fixed (with custom field appearing below the main body). To make the custom thread fields system more flexible and increase their utility, I'd suggest making the display order of the input boxes also configurable and/or consistent with the output display order.