Although changing the XP balance between fates and dungeon will have an effect, I can't see how it's possible to see if this will increase or decrease queue times for DD's. It's just as likely that more DD's queue up into the system after the changes which may only make the wait time worse. On top of that, then people will no longer want to form fate parties while they all wait for dungeons to pop (can't be queue'd while in a party), making fate farming harder to manage. This could leave everyone in a worse position then what we have now.
Just saying, be careful for what you seek.
