I would love to be helpful here, but I don’t yet understand the workflow of the engine. As someone who has used almost every major mastering software (for production deliveries), every one of them says:
“HEY, pick your dither in this preference. If you are generating a DDP, Burning a CD, or exporting to a 16-bit file from a higher bit-depth, I will always put this dither last.” Done.
But WL is so configurable that I don’t know if such a process could be placed in a global preference.