When deposed Flyers GM Chuck Fletcher inked Travis Sanheim to an 8-year, $50 million extension, he bizarrely committed to a bang-average defensive group for the long haul. Fletcher had already signed Ivan Provorov and Rasmus Ristolainen to long-term deals of their own, and Tony DeAngelo and Nick Seeler were each locked into two-season commitments. Fletcher is mercifully gone, but with …