Currently, you are able to enter into a lower tier game in your legendary ship if you are in a squad with someone. If you wait and do not select a fleet when the other person in your party ques for veteran, you will auto select your legendary ship, and not have to pay any repair costs, even if you lose. This includes if you are not in the top 3 in the match. This is bug is completely reproducible and is being actively exploited by several players. Not sure how this bug works, however I'm throwing it out there so it gets fixed.