The ambusher COULD be a good role, it really could, but right now it's really s**t due to this.
All visitors of your target will know your name, including the player you attacked.
However, I looking at the ambusher page's comments saw this comment from an anon:
I do feel like the role should be revealed, but in a different way.
E.g: Your target was attacked! You could barely see someone run away, it could have been [name] or [name]
I do think the anon was on the right track, but I decided to increase the fix.
"You found (visited player) dead outside (ambusher's target) house! You saw someone quickly running [clockwise/counterclockwise], away from the crime scene!"
The ambusher would run straight home after killing someone, witnesses would see him/her running away from the crime scene.
If the ambusher runs clockwise, the ambusher's house is within the 7 houses that are clockwise of the target's house.
Example: The ambusher runs clockwise after ambushing house 10. The ambusher lives in house 11, 12, 13, 14, 15, 1, or 2.