S.O.S. Flag Idea

Me and my friends and I always wanted to help our alliance members if they are attacked, but it's often hard to communicate with alliance members. I believe that adding a S.O.S. flag would help with that problem. You could go into the crow's nest, and choose the S.O.S. flag, and it would appear on the map to alert your alliance mates from across the world. Also, if you weren't in an alliance, and you're being chased by some people you can't handle, you could put up the flag in hopes to getting some friendly people. Sure it could attract some unfriendly pirates, but that's the case with real life S.O.S. signals. It would be very similar to the Reaper's Flag, but with good intent! I feel that it would be a fun and simple feature to add to the game.