That's an interesting idea. I think I would have it script out the command with the current values:

DECLARE @filter NVARCHAR(100)

SET @filter = N'InsertYourConfigurationFilterHere'

SELECT REPLACE(

N'EXEC dbo.SSIS_Config_SetValues N''' + ConfigurationFilter + ''',|N''' + PackagePath + ''''

+ CASE WHEN GlobalValue IS NULL THEN '' ELSE ',|@AllValues = N''' + GlobalValue + '''' END

+ CASE WHEN ProductionValue IS NULL THEN '' ELSE ',|@ProdValue = N''' + ProductionValue + '''' END

+ CASE WHEN DevelopmentValue IS NULL THEN '' ELSE ',|@DevValue = N''' + DevelopmentValue + '''' END

+ CASE WHEN TestValue IS NULL THEN '' ELSE ',|@TestValue = N''' + TestValue + '''' END, '|', CHAR(10))

FROM dbo.SSIS_Config_AllEnv

WHERE ConfigurationFilter = @filter