After playing The Knife of Dunwall, it occured to me that having allies that you could control, within reason, could make the game a different sort of entertaining. Having two assassins working together to take down a target.
Naturally, a multiplayer section would probably lack the engaging story present in the campaigns, but I think it could be fun.
Your character could be slightly modifiable, though only other players would see it.
- Primary weapon could vary from a standard City Watch saber, the Whalers blades, the Overseer's sabre, or Corvo's iconic blade.
- Ideally the character's face would be masked. Several could be taken from the game proper, including Corvo's skull mask and the whaler's masks.
- Perhaps a uniform: the whaler's suits, Corvo's coat, or maybe even a City Watch uniform.
Payment for successful missions would be some value x, while bonus objectives would add to that value.
- Killing no one but the target.
- Capturing the target (rendered unconscious and brought back to rendevous).
- Avoiding detection.
- Surgical operation (No one killed or unconscious except the target).
Power progression should probably be slowed up a bit. Say, one rune per objective and multiple levels of each power.
- Bend Time would be the biggest problem, including Daud's version of Blink. Most likely, all players would have immunity to it, though that could make it a bit of a breaker.
- Possession would only have to be modified to show other players that they were possessed.
- Arcane Bond could be modified specifically to help players work together.
- Summon Assassin could be modified into a multiplayer power that allows players to catch up to one another.
- I think the other powers could remain as is, though slight balancing may be necessary.
While I doubt that a multiplayer would live up to the fantastic experience that is Dishonored, I think it could be entertaining.