As much as I think hall will be a stud (I really think he could get 85+ points and develop into a more complete player under Hynes - people forget he had 80 points a year ago on a real bad oilers team), I think a transaction like this was a must for the Oilers. I really think Larsson is underrated here, and can be a top pairing defenseman. A lot of D take longer to develop, but it seems like Larsson's game is really rounding out, and I think his strong first pass will really help Edmonton forwards. For Larsson doubters, see
http://www.allaboutthejersey.com/2016/2/12/10974744/new-top-dog-adam-larsson
Assuming Lucic and Demers sign, a top 6 and top 4 like this is pretty good. Still got some work to do, but getting there...
Lucic - Mcdavid - Eberle
Draisaitl - RNH - Puljujarvi
Klefbom - Larsson
Sekera - Demers