I was quickly looking for batch processing using TIFFs … there it is. 
The link is about how I’ve been doing with pics for photobooks (print shop), as I needed a ‘viable’ solution (it’s more a workaround) for mass colour correction based on some softproofing, which PL didn’t offer yet. The goal was to warm up the pics, that otherwise would come out to cold.
here a snippet
>> Synchronization <<
Pictures for a print collection or photo book are (usually) taken with indivual color settings.TIFF’s are finished files and as such contain no more information about colour temperature. Only with that it is possible to mass correct all pictures at once, with exactly the same settings
Before I exported them as JPG … I quickly went through the collection to see if it worked – and to retry with those needing an extra cure.