Leafs roll out a bigger, more reliable third line with Nicolas Roy, Dakota Joshua and Matias Maccelli, aimed at grit, puck protection and smart playmaking. Berube lauds their dependability in key moments as Toronto reshuffles depth behind Marner's exit. Preseason showed early chemistry and Roy adapting to a new system; Maccelli flashed vision with assists, Joshua provided pro-style forechecking. Reimer latches on as a possible third goalie as camp winds to two remaining tuneups against Detroit.