By Matt Findlay Rugby union can be a cruel mistress at times, oft denying so many of the game’s longest-serving, loyalist and arguably most-deserving stars the chance to hoist a trophy and taste that rare joy of premiership success come season’s end. Just ask Southern Districts. Since forming three decades ago the Rebels have never had their name etched onto the Shute Shield despite looking likely so many times, falling agonisingly short in grand final appearances in 2012 and 2014 too. Naturally, the Rebels’ greatest former stars never earned that notch on their belts and sadly, based on the current trajectory, veteran halfback DeWet Roos could end up on that list of non-title winners. Roos, 28, has consistently been among the Shute Shield’s best during his long tenure with Southern Districts but for him and some of the Rebels’ other older statesmen that premiership window closes further with every year that passes. That’s the way it appears from the outsi