I like the idea of the specially colored, always-on-dar, friendly fire enabled dot for spies. Of course, their killshooter should still be on. It reminds me of other games back in the olden days prior to MMO stuff being common. They were text based, but people who needed a punishin' had a flag set on them that basically meant all could kill them with no consequences.

I'd personally institute it as an amount of in-flight time timer, with a minimum altitude of 500ft before time would start coming off, and no autopilot allowed. Flying off the map would reset your time to 0 and you'd have to start over again. I'd also have it so every time they died, their name would come up in lights as 'Buddy got killed because he got caught spying. Everybody point and laugh.' I'd probably set that last part up so if a message for buddy had come up in the last 10 minutes, it wouldn't send another one so it wouldn't spam the channel. Also the capability to not receive those messages would be a good idea. I'm not speaking of anybody specific if someone whose handle is 'Buddy' reads this.

20 hours of flight with that special color calling all down on your head I think would be a reasonable punishment for spying.

Hrm... maybe this needs to be over in the 'Wishlist'?
Wiley.