Ok, what about all the rest of the things?
Can you enter more than once a day? if so then you have a point, if not then given it takes <10 minutes to run and you have 24 hours per day to enter (and most will spam at jp midnight) I don't see the problem.
In a week there will be no problems at all for anyone as is the case for all content, I don't see why we have these same complaints after every patch when it always goes the same way.
Everyone gets mad if they have to wait even 10-20 minutes when content is brand newly added right after a patch, it's just silly in my mind.
FFXI is an old game they have strict limitations on what they can do, they can't do what they do on newer games where they just make unlimited instances of everything. Adding more NPC won't fix the problem because the issue is limited battlefields.