Not many players thought through the implications of the Express Mission event, nor was enough information for it available, and became stuck with less than optimal class choices. Now, that changes.
Amazon have stated that the confusion and frustration from players that have started the event on a character that would not benefit as much as a different character on their roster has been noticed. Due to that, they confirm that Amazon are actively working with Smilegate to help alleviate this as well as improve the communication surrounding the event in-game.
To remedy the current situation, they have updated the event to implement a “character change” feature.
This feature will allow players to change their designated event character one time in order to make a more informed decision about what character they would like to claim Express Mission Event rewards on. Additionally, only level 50 characters with an item level under 1100 will be able to be designated as an Express Mission Event character.
It must be noted that if you have already used the honing benefit provided by the event on any T1 or T2 gear pieces, you will not be able to change your Express Mission Event character.
After the update, a notification will be displayed the first time you attempt to hone a T1 or T2 gear piece on your Express Mission Event character to alert you that you will be unable to change your selected character if you continue with the honing attempt. Players that have only honed T3 gear on their Express Mission Event character are exempt from this and can select a new express event character if desired.
This will not be exploitable, though, as players will be unable to change characters if they've already claimed the event rewards, and have the said rewards double.