Could you add an Advanced field in the Custom Translation panel where people can add a custom json object as text to be used for the conversion - so e.g. for IFC people could specify
{ "conversionMethod": "v4" }
Check json validity before submitting the job

Could you add an Advanced field in the Custom Translation panel where people can add a custom json object as text to be used for the conversion - so e.g. for IFC people could specify
{ "conversionMethod": "v4" }Check json validity before submitting the job