One thing I would change is this ; Take the meltaguns away from your
IG and give them to your Grey Hunters. Give the
IG dudes plasmaguns instead.
The reason is that you don't want your guardsmen to get close to the enemy, but you DO want your Grey Hunters up close.
Dislike the wolf guard and what you are doing with the RP's. Divination seems pretty cool....but there are none of the powers in the BRB that are as good as JOTWW. Especially if you aren't putting the WG in termy armour to protect the RP's (which is harder how without would allocation shenanigans BTW). If you put 2 RP's walking with 4 3+ wound and no invul guys on the board, you are going to get 350 wiped out very quickly.
Also, no tranports...I know...they suck now....but man, those grey hunters are going to get rocked. Maybe forget about the WG, take a hunter out of 2 of the squads and put the RP's in there and 4 rhinos. At least they will get 12" from deployment without having to take a leadership .
I kind of like the idea of Divination. Just take 1
RP with divination and keep the primaris power. Use it to giving your long fangs re-rolls to hit. Consider taking a wolf preist in lieu of your other
RP. Add him to one of your
GH squads that has plasmaguns. He will give that unit preferred enemy against Infantry allowing them to re-roll all rolls of 1's to hit. Your plasmaguns will never get hot then AND you'll re-roll to hit in
CC. Also...
JotWW is a better power, but do you still get to pick it? I think you have to roll for it.
I agree with what deggreg said about transports. You need them and despite what everyone is saying - they don't *suck* now. A Rhino is a bargain at 35 points. Get four of them. You can drop a total of 5 or 6 standard grey hunters (that's about 75 - 90 points) to pay for Rhinos, then your
WG can lead the squads and your
RP's can join too.
Can you put any space wolves in the Vendettas? If so I would consider putting your veteran squads on top of objectives and behind the defense line. Use the wolves to take the fight to the enemy.
EDIT : I forgot to mention mark of the wulfen. If you plan on using any of your grey hunters in
CC, then you definitely want
MotW in those squads. It's also a bargain at 15 points - much better than a power weapon.