I second the opinion of adding Rune Priests, they really are such great fun!
I'll try a unit by unit review. Btw, I love the layout of the list, very easy to read, just I like having the points values there for reference :P
The Wolf Lord looks great fun! Post a kill count after the battle?
The terminators, for a start, I'll assume you mean frost axes? From here, I query this choice. In 5th edition,this was fine, as they acted just like normal PWs with the +1 strength. But now, lowering your initiative to 1, with +2 S, albeit with AP 2, seems pointless when you can get a power fist for the same points?
Also, 3 SS... Quite a point sink, and with you being allowed the 2+ armour save more and more these days, I doubt it's worth it.
My changes here would be to remove the Frost Axes altogether, replacing them with a mixture of Wolf Claws, and Power Fists and a single Chain Fist. The SS(s) perhaps change to combi-weapons for the added ranged versatility?
The Grey Hunters. Same as above really, get rid of the Power Axe, go for the Power Fist, for some guaranteed kills.
Maybe Mark of the Wulfen too? It's great fun, and a bargain for the points! Rending is great this edition.
I normally run my Grey Hunters with a flamer and melta gun/plasma gun combo. This keeps the points down, as you get both for free, and the flamer is good on the counter charge.
Blood Claws with Lukas? Good choice! I love seeing him used! Same as above, again, though. Power Fist maybe?
And perhaps take a melt a gun instead of one of the flamers.
The Thunderwolves. SS are a good choice here, and in addition, I'd recommend adding a thunder hammer, the S10 is too good an opportunity to pass.
The long fangs... I swear by the full Missile Launcher... But if you are inclined, perhaps take 3 Missile launchers, 2 Lascannons? But having the plasma cannon mixed in with the other 2 gives the unit too much of an identity crisis when target selection, even with split fire, which you will lose quickly as the squad leader should always be first to die
Agh! Fortification! For a start, I find this conflicts so much with the lore of the wolves... Control the midfield!! March up there, blast away! Then yell COME AT ME! When they get near, and beat the to a pulp with counter charge.
It's also points you could be spending on your Rune Priests
There we go, hope that makes up for the silence here :P