If you dont have the balls to tell your HC that you are defending your galaxy, then you have a problem.
If your HC expects all your ships to be at his/hers alliance service at all times, then he/she has a problem.
I agree it would be fun to disable exile. go for it please
Many people will say "what about the people who never logs in etc"
Well lets first decide to turn off exile-function and then come up with a solution to handle the ones who clearly ruin their galaxys chances to be decent.