Instead of giving two Vindicators Siege Shields, why don't you give all three Dozer Blades? Almost the same effect, except cheaper and covers all of them.
I have a tendency to reroll 1's as 1's.
What's the first librarian doing? You could take a Ravenwing Bike Squad or Tactical Squad instead!
But glad you're changing pace a bit
He's in the crusader with Belial and will jump out to join the party when the terminators come in.
I played a game with this list today, and I discovered the biggest weakness for the Hammer of Caliban formation. Wraithknights. His first two shots of the game both rolled 6's and smoked the Land Raider and a Vindicator right off the bat, completely neutering the unit.
The game went downhill from there, and waiting on the terminators to come in on turn 2 reminded me why I don't like reserves. So the list has been changed to give it a bit of a beefier punch!
Combined Arms Detachment - 1135pts
Lord of WarAzrael.
215ptsHQEzekiel.
145ptsLibrarian: Mastery Level 2/
90ptsElites5 Deathwing Knights.
235ptsRavenwing Command Squad: 3 Black Knights + Apothecary (4 models total) w/ 1 Ravenwing Grenade Launcher.
190ptsTroops5 Tactical Marines: Lascannon.
90pts5 Tactical Marines: Lascannon.
90ptsFast AttackRavenwing Darkshroud.
80ptsHammer of Caliban - 715pts
Land Raider Crusader.
250pts3 Vindicators: Dozer Blades.
375ptsTechmarine: Servo-Harness.
90ptsTotal Points: 1850
Model Count: 27
Azrael, the Deathwing Knights, and both librarians will pile into the crusader. The Command Squad will stick close and provide some plasma support and maybe some Stasis Grenade action as well. The Darkshroud keeps close to both of them to prevent any Overwatch. And the Tactical Marines cower in the back, popping off Lascannon shots.