It was a short summer for the Stanley Cup champion Colorado Avalanche but they’ll take that every year. Despite losing a few players to free agency, there wasn’t much drama and an enormous piece of business got taken care of earlier this week with Nathan MacKinnon’s mega contract extension. The core is in place and the Avalanche hope to begin their quest on a repeat starting with this training camp but there are still a few unanswered questions to watch for as the practices and preseason unfolds.