For whenever,...>>>> NO

In the event someone ragequits, DC's is voted out or just plain leaves, then yes. HOWEVER...when the previous is the case a confirmation window appears asking the remaining players if they want to simply replenish the ranks OR adjust current jobs first then replenish. This can be a double edged sword with many different possibilities. Could hose said job that is missing on getting in and increase their wait time. Some players might not wanna change because they are there to lvl a certain class or whatever.

Now that I think of it more, that suggestion isn't even right. We should not be allowed to change within the duty. Doing so could have a large domino effect on the rest of the player base waiting to get into a duty.