I used to be vehemently opposed to side-switching myself. I was in a Rook squadron that I had flown with for many years in AWFR that had always been Bz there. But, one afternoon after just watching "Battle of Britain" for the 9,375th time I was really lusting for some quality trigger-time. I log onto the arena (before LW arena split) and to my chagrin there were no actual fights. The sides weren't actually imbalanced there just weren't any real fights from the Rook perspective. So, I switched to Knights because I noticed huge red dar bars between them and Bishops (thus why there were no fights as Rooks). Well, long story short, I got my trigger-time, gained some perspective and have never looked back.