::Thanks for you comments Keith - in the absence of any dissenting opinions, I have gone ahead and created the first new article I proposed List of Hunslet narrow gauge locomotive designs and moved the table from this page into it. 
 ::I will wait for more opinions before I do anything about the second page (List of preserved Hunslet narrow gauge locomotives).  IMHO there is enough data, not necesarily on this page but on preserved railway pages: a list page would pull it all together. It would also simplify the "preserved" section of this page which is in danger of turning into a list of heritage railways with no explanation of what locos they have there, and therefore has no indication of their relevance.