Time limit to re-enter dungeons

[Richard]

Not necessarily. Even farming the top level NMs for hours on end, it took my Linkshell a long time to get all the gear we wanted and needed.

and it took other linkshells 1 month to cap out 25 people on all NM gear. Not every case will be the same. No one can contest that the current dungeons will have a smaller life expectancy overall.