I know I do this a lot but I'm going to compare FFXIV to other MMOs again. In most other MMOs separate classes are separate characters, so players that like to do raid content more than once per week have the lockout ability to do so. I really like the idea of lockout per role coupled with the changes originally suggested. (I don't like the idea of lockout per class as sometimes we switch classes depending on which turn we are doing but each player remains within their role)