this won't help. There are 2 issues. the DPS queue is simply solved by increasing party size to 5, added an additional DPS slot to clear out the dps queues.

The second issue is the Adventurer in Need bonus itself. Giving XP bonus to jobs that are in need makes the problem worse.
because:
#1: with fewer number, they get instant queue already.
#2: bonus xp means they need less dungeon runs to get to top level.

The people in need of the bonus are the dps that have to wait longer to do content. Meaning they have less access to doing content, where the current bonus is going to jobs that can do more content because they get instant or near instant queues.