Death Watch with vanilla marines

here's a Deathwatch army list i fiddled around with today that could be interesting that uses the vanilla codex and a lot of special characters:

Codex: Space Marines Roster - 1750 Deathwatch Army

Composition Report:
HQ: 2 (1 - 2)
Elite: 3 (0 - 3)
Troops: 2 (2 - 6)
Fast: 1 (0 - 3)

Total Roster Cost: 1740

HQ:
Captain Cato Sicarius, 200 pts
Chapter Master Pedro Kantor, 175 pts

Elite:
5 Sternguard Veteran Squad, 150 pts

• 2 Plasma Cannon
  
• Sergeant - (Bolt Pistol; Combi-Plasma)
  

10 Sternguard Veteran Squad, 265 pts

• 2 Missile Launcher
  
• Sergeant - (Bolt Pistol; Combi-Flamer)
  

10 Sternguard Veteran Squad, 265 pts

• 2 Missile Launcher
  
• Sergeant - (Bolt Pistol; Combi-Flamer)
  

Troops:
10 Tactical Squad, 250 pts

• Plasma gun
  
• Lascannon
  
• Veteran Sergeant Haas (IA) - (Artificer Armour; Iron Halo; Bolt Pistol; Power Sword; makes squad relentless)
  

10 Scout Squad, 200 pts

• 8 Sniper Rifles
  
• Missile Launcher
  
• Sergeant Telion
  

Fast Attack:
Vanguard Veteran Squad, 235 pts

• Equip with Jump Packs
  
• Sergeant Culln (IA) - (Jump Pack; Bolt Pistol; Relic Blade; Power Sword; squad re-rolls hits as long as they're outnumbered in melee, and are stubborn)
  
• 4 Veterans with Bolt Pistol & Chainsword
  

if i was to drop it to 1500 to make the initial army, i'd probably drop one of the 10man sternguards, and use the remaining points to add a special weapon onto the vanguard veterans.