If Crystal Tower gear is supposed to be catch up gear/gear for those who aren't capable of running coil yet to use to be able to run it - Why is a lockout in place?
How on earth are you supposed to catch up if it takes you 5 (assuming there's only 5 pieces to collect) weeks to do it?
It simply does not make sense, Crystal Tower was always marketed as an alternative for those incapable of handling Coil yet to use to prepare.
Going to quote this here, because someone pointed something else out and said it much better than I could.