Hey there !!
I'm trying to help my best friend to improve / adjust his list of Raven Guard these days so I though I 'd drop my thoughts for evaluation . Note that my friend wants to stay as fluffy as possible (just like you if I remember correctly as I read a lot of threads nowadays

) so here's what I have come up with :
Hq:
Shadow Captain Korvydae 155
Elites:
10x SternGuard Veteran Squad w/ 4x Combi-Melta in Drop Pod 305 (2nd , 3rd or 4th round near enemy
Teq or Vehicles)
Ironclad Dreadnought w/ Power Fist with built in Heavy Flamer + Chain Fist with built in Meltagun + Ironclad Assault Launchers in Drop Pod 225 (in a ruin for 3+ cover in first round)
Troops:
10x Assault Squad w/ 2x Flamers + Vet Sergeant with 2x Lighting Claws 230 (Korvydae joins them) (going fast for enemy's troops)
10x Assault Squad w/ 2x Flamers + Vet Sergeant with Lighting Claw and Power Fist + Melta bombs 245 (going fast for enemy's troops)
5x Scout Squad w/ 4x Sniper Rifles + 1x
ML + 5x Camo Cloacks 84 (objective grabbers with 3+ cover or 2+ if 1st round or going to ground)
5x Scout Squad w/ 4x Sniper Rifles + 1x
ML + 5x Camo Cloacks 84 (objective grabbers with 3+ cover or 2+ if 1st round or going to ground)
Heavy Support:
Devastator Squad w/ 4x
ML + Flakk 170 (anti-armor and anti-air from 48")
This list comes at 1498 points

.. So what do you think ? Can he be semi-competitive like this? Maybe not against my
GK 
but against other lists?