With that JR physicality thing.... we can only make meaningful changes if we also make meaningful trades and signings, otherwise we are just adding useless snarl on the cheap a'la days past. Surely I'd be fine with getting Engelland back as a 6th-7th D if he would like to come back and take vet money to do so, but it doesn't really anything.
Example (forget about likelihood and NTC's and stuff):
Kessel for E.Kane plus something.
Maatta plus something for Trouba.
Let Bones go. Sign Hanzal.
Its a bigger, faster and more physical lineup. Are we better... I think so, but arguments could be made against it... especially by those more devoted to the Church of The Hotdog than I.
About Sheary.... to me even considering him depends entirely on his salary. With what he did this year, he should likely be an extremely cost effective player relative to production next season too... if he were to play with Sid. But we have Guentz for that spot who is just a lot better, and suddenly the picture is less rosy for Sheary. Depth is nice however.... injuries happen.
Another argument against trading Sheary would in any case be that most everyone would - fair or not - consider him largely a product of Sid and we are unlikely to get a lot for him.
If we keep Sheary and we have Guentzel.... and Wilson who seems like he has a certain faith from Sullivan and fits being physical.... maybe Hags is a trade candidate. Again - from the perspective that someone significant likely needs to leave if anyone significant is to be added.
On the back end.... outside of our own guys it is hard to find anything really meaningful in free agency I think. Alzner might be broken and could become the next Orpik contract. Shattenkirk is soff and not needed on a team with Tang and Schultz, and what is there really in the market beyond that? Stone, Kulikov, Brendan Smith? Its not guys who adds anything over what we have even if somewhat different, IMO, and with the dearth of quality UFA D, they are likely all getting overpaid.
We are only getting a D upgrade through trade and we'd likely have to overpay big.