Though the 32 bit Mac Client has not been supported for months it still works. There is a popup notice in the lates version encouraging user to upgrade.
Garo is over. Some people were concerned that the Calamity salvagers might not continue to (re) sell Garo gear, but they do. That is their purpose after all.
The latest iteration of Moogle Treasure Trove is over. The moogles are still around to take any tomestones you may still be holding on to.
All Saints' Wake is still active for a couple more days.
FInally, you cannot level past 50 on Blue Mage without the Shadowbringers expansion.