yah, if you have passed the first 3 tiers or whatever that is called, for each tier you get a reward of 50 % for all chars. Seems they want to force the players to play the episodes again.
Is it buggy? Somehow the game seems to freeze, while downloading the content from the server for the tutorial. I have started with a rom. lib. borg. Had one before at lvl 5, so i deleted it and started over again. Dont have an Tac yet, so that was my choice.