This reminds me of the Battlefleet Gothic tabletop game.
The Orcs had the coolest weapon in the entire game…they bolted (correct term as per the rulebook) torpedoes to the back of a Destroyer class spaceship. Once the in range they will fire, the torpedoes to give the spaceship more speed and ram the target ships.
With regards to Kill Team, the game require 10 models max, mainly a squad based game. For Space Marines, you only allowed three Marines and the rest need to be Scouts. The Eldar is the coolest as you can use a Troop of Harlequins…finally the forgotten Harlequin figures can be used again.