Playing the PC flight just now I noticed that I'm suddenly getting MUCH more XP than before. I gained an entire level by playing and finishing just one Heroic Firefight match and 2 levels overall after just 1,5 hours of play. Was the XP gain rate officially increased?
The progression system and values definitely weren't final in the flight - and I doubt they are yet, TBH, but the team is using flight data to help inform tuning. Glad to hear the initial adjustments are being positively received!