[Shadow's Fury]

Hmm, I'm not sure about this list.

Who are are specialists and what traits are they going for?
If you have a heavy weapons guy I would almost always suggest he be your Indomitable specialist (going for relentless so you can at least move up the board).

I used to have snipers in my kill team, and even tried out a full sniper scout list for fun. BS3 hurts, especially when you have so few models. And then you are always relying on a 50:50 chance to wound even against grots! I was rundown by an gretchin horde with my all sniper scout list as I couldn't wound the buggers! By all means take them if you want, but I certainly wouldn't recommend them

 

[Shadow's Fury]

Raven guard assault marines come into their own here.
Being able to use their jump packs in movement and assault while getting re-rolls to their hammer of wrath is fantastic!

The two flamers in a small unit is incredibly useful when facing a horde kill team. Can even get three plasma pistols in there if your really need armour penetration. But as 2+ save models are not allowed suppose that is less of an issue