Well this is a list I'm trying to work to, any constructive opinions would be welcome. This list is intended for use in friendly games in the actual shop.

1500 points

Chapter: Serafim

Traits: Clense and Purify

Drawback: Die Standing

HQ:

Reclusiarch – 85
Jump pack
Termi honors
Bolt Pistol

Total: 121

Troops:

10 Tactical Marines – 150
Plasma Gun
2nd Plasma Gun
Vet – 15

Total: 190

6 Tactical Marines – 90
Missile Launcher

Total: 100

7 Inquisitorial Storm Troopers – 70
Plasma Gun
Grenade Launcher

Total: 90

5 Tactical Marines – 75
Plasma Cannon

Total: 95

6 Scouts – 78
4 Snipers
Missile Launcher

Total: 108

Elites:

Dread – 105
Las-cannon
Hv. Flamer
Extra Armor

Total: 140

4 Grey Knight Terminators and 1 Brother Captain – 245
Psycannon

Total: 275

Fast Attack:

9 Assault Marines – 198
Vet
Power fist
Melta Bombs

Total: 246

Heavy Support:

Predator Annihilator – 120
Heavy Bolters
Extra Armor

Total: 135

Grand Total: 1500


The Chappy obiviously goes with the assault squad. I've considered deep striking the termies but they are very vulnerable on the turn they arrive, and they may arrive too late...