There are multiple options to add some size, skill and experience to the back end this summer It’s no secret that the Blue Jackets want need to upgrade their defensive corps with an infusion of size, physicality and experience. Jarmo Kekalainen and his front office could wait out the first five picks of the draft hoping that one of Simon Nemec or David Jiricek is still on the board when they pick at #6. However, if they are truly in a “retool” rather than “rebuild,” its quite possible they don’t want to throw an 18-year-old who is coming to North…