The main article is quite stubbish in terms of content - its the navigation boxes which are making articles too large - categories do this far more efficiently. I would much rather read a single article such as Crusaders (rugby) then have to read several articles on the one topic, with (of necessity) repeated background information in each. If the merge is rejected, then I would suggest a name change to either History of the Highlanders (rugby) or History of the Highlanders rugby franchise as being more appropriate, since Highlander is a relatively generic word.