Trading RNH might get you a Keith type defenseman, you just have to find someone who isn't all the way there yet. That's part of the reason people keep proposing Seth Jones and other defensemen in that age/potential range
Chicago has dumped more than just Sharp and Campbell as well. The franchise has become pretty much a talent feeder system for the rest of the NHL. If your name isn't Seabrook/Keith/Kane/Toews, you're expendable if you demand too money(Saad, Ladd, Buff, etc etc)
Arguably the weakest incarnation of San Jose's defenses over the last decade, good enough to contribute to their yearly beating at the hands of the blues/kings anyways.
SJ has always had issues with their team makeup though. From a top heavy forward group backed by a weak bottom six, to it's mediocre defense that always seems to come up short against it's divisional rivals with that boast at least one star level defenseman that owns them every year, down to it's goaltending they don't seem to put much importance on fixing(though I think that's very much related to the defense).
I'm not arguing that you can't do it, I'm arguing that you shouldn't do it. Depth and balance wins in the NHL, not star power.
The Oilers could use one more high potential defenseman in case Klef/Nurse's top ends don't turn out to be that high(not to mention they need a guy who brings offensive presence), and RNH is probably the best bet to entice someone to give up that type of player.
I know it's rare, and if they can't find a player to fits the bill, don't trade him.
Who is suggesting that the Oilers make a trade for the sake of change? I'm certainly not, nor am I suggesting that they dump RNH for cap space or anything else silly like that. I'm suggesting that the Oilers who boast an exceptionally top heavy lineup that is consistently undermined by a poor defense, use one of those forwards to go and try to rectify that.
Hall/Drai/Mcdavid look like the guys to build with up front, Nurse(and maybe Klefbom) on the backend. Everyone else is expendable for team needs imo,
that includes RNH, Yakupov, and RNH.