Square is simply making a major mistake with this, same one they made with NMs.

Atm I highly question if they will be able to keep up with the playerbase with that re-enter period time. There will be group doing it 6-8 times a day and it will lead to burn out or simply them completely clearing out a dungeon in a week.

This is just bad game design honestly... unless the drop rates are abysmal the dungeons will have less then 1 weeks life to them and they will fade away to nothingness. If the drop rates are bad.. therefor extending the life of them, people will get sick of doing them from spamming.

Square simply cannot produce content fast enough to warrant this style gameplay in every aspect of the game... they said it themselves it takes 6 months to add new assets to the game.... so why continue to release every piece of content with less then a months life to it when it takes 5-6 fold that long to make new stuff.