Just FYI....Corsi % =shots on goal for + shots blocked for + shots missed for/(shots on goal for + shots blocked for + shots missed for+shots on goal against+shots blocked against +shots missed against).
JJs and Savards numbers basically show that a whole lot more offensive activity is going against the CBJ rather than for the CBJ while they're on the ice. a 50% rating is just that-even offensive activity for or against.
The -11.7/60 means that 11.7 more shots of all types are going on against the Jackets than for them while this dman is on the ice. This stat is per 60 minutes 5 vs 5.
Werenski is at 58.3% and +21.5/60 minutes. That's outstanding.
Zach Werenski NHL Advanced Statistics (All) | Hockey-Reference.com
I'd recommend reading up a little on the advanced stats and playing around with them and gaining a basic understanding. Players are being evaluated on these more and more, so it's important to know something about them if you seriously follow the game. I'm sure that you'll pick up on them pretty quickly if you give it a hour or two of time at some point. Here's a quick starter guide if you're interested:
SI.com's Fancy Stats primer: A guide by @samtpage
I like JJ. He came to the CBJ and embraced the trade. I think his attitude was a seminal moment in changing the culture. He's a good egg. Just not a very effective defenseman.
With respect to what Jarmo should do, I don't know if there's too much to do on the dman front this season. I'd think that hope in
Hannikainen, Carlsson and Harrington improving a bit, along with better play from JJ and Savard is about all one can hope for. The CBJ are blessed with a great goaltender and a dynamic #1 defensive pairing, so it's not as if it's a completely grim picture. I admit to not knowing much about who's in the pipeline in terms of draft picks who are in juniors or in the minor league system. Ideally there's a realistic middle pairing dman or two in the mix, but I don't know. I do think that signing JJ to anything more than a one year stop gap deal would be a mistake-so that would be "addition by subtraction".
With respect to the forwards, Jarmo's going to have to make a trade or he's really rolling the dice. He may have to pay a premium for a #2C, but you have to do what you have to do. I think standing pat on offense is irresponsible given that the Jackets only have one forward line which has been consistent in their scoring. Our defense (all things considered) isn't near good enough to make up for a bottom power play and mediocre forward output.
If the CBJ are content with being a playoff bubble team for the next few years, then they probably don't have to do much to their roster. If they want to be a real contender, they're going to have to tweak the current roster.