list of valerian steel and owners:
http://awoiaf.westeros.org/index.php/Valyrian_steel
"Benjen /Coldhands is long overdue. They key there is how he was created. That is going to be important to the coming war."
explain?
Part of it my comment was about finally removing Benjen from the boat with Gendry. I figured that after they used Benjen as bait last season, it would be a good time to reintroduce him since most viewers had forgotten him after being off screen for years (literally). However there's more:
A lot of debate about whether Benjen is or isn't Coldhands. I don't think it matters. He seems to be filling that role in the show, to what end we aren't sure, but he is potentially a big deal. It isn't like the good guys were ever gonna capture a White Walker alive. Benjen isn't one, but he is nearly the same thing. Intel. Westeros is about to suffer an "alien" invasion - they need to fully understand their enemy.
Also, it is past time for the handful of people who know about the White Walkers to convene a strategy session with the powers that be. Think about it - the only people that actually know are Bran, Jon, Benjen, Edd, Meera and some Wildlings. That is ridiculous. They are about to be invaded and there hasn't been a marshaling of forces and sharing of intel. Benjen can probably offer some key info.
Finally, he may not be a normal man anymore, but he is still a Stark. And I think its possible he will have some counsel for Jon & Sansa. He may not care as much as he once did (conjecture), or maybe he still does. We'll see.
Some other follow ups:
Also, Sam stealing Heartsbane is a big deal. I had to think for a while about why he did it. From the show's perspective, it potentially gets another of the oh so rare Valyrian steel swords to the Wall, and perhaps it brings Randall Tarly to the Wall too (an excellent commander and ridiculously good soldier). That may be Sam's motivation too. I'm not sure. If he is really heading to Oldtown though, that seems less likely. On a side note, I really wanna see Oldtown. Even GRRM hasn't done much with it. The entire Reach has been barely touched. Anyone else wanna see Highgarden? (if you thought Horn Hall - the Tarly castle - was beautiful, Highgarden is even more ridiculous, almost Disney esque).
Highgarden:
Oldtown:
I don't know what Tommen switching allegiances to the church is going to do. I still think Dany and/or Dorne is gonna sack Kings Landing while all these idiots are squabbling. I think Ellaria Sand is currently marching or sailing the entire Dornish army right up to their doorstep so she can take stick her foot up the ass of every Lannister left. And if Mace Tyrell is Kings Landing's military leader (since Jaime is being run off) - that is going to end badly. The High Sparrow can try his BS against Ellaria Sand - she'll just stab him in the face and smirk as he bleeds out.