I'm not a fan - but it makes money for the RFL, so I wouldn't advocate scrapping it... but - it needs changing; as it stands, the stupid and falsely constructed 'derby' concept creates some turgid, one-sided spectacles, and hands a free 2 points to certain teams.
If it must continue, just make it a normal weekly round; slightly relieves the overloaded fixture calendar that players complain of, and stops the skewing of the table by matching up teams based on a loose attempt to create a derby.