The interdictor cruiser has two basic purposes,
Prevent enemy ships from jumping into hyperspace
- Mechanic Ideas
- Game lasts one additional round as long as a interdictor cruiser is present (helps imperial destroy all rebel ships?)
Pull enemy ships out of hyperspace
- Mechanic Ideas
- Cancels the hyperspace objective bonus, forcing enemy to deploy in normal deployment zone (kind of weak IMO)
- Pulls enemies out of hyperspace early (Enemy can only deploy half fleet to start game, then the rest deploys at start of round 2 with zero speed)
I apologize as I have not read this whole topic thread so this may have come up already, but in the Thrawn trilogy the interdictor was used in a very unique way during one of the battles. The basic premise was, it was very difficult to jump into a system with absolute accuracy. You didn't always know where your ship was going to end up. So to overcome this, Thrawn used his interdictors to pull his own ships out of hyperspace exactly where he wanted them to be for flanking the enemy. I could see this mechanic working in Armada as well.
Sorry for the long post!