FFXI is great and I want this return

[Enkidoh]

The Invisible feature in FFXI did not actually hide you completely though - you would still show up in a manual player search (I found that out personally many a time using /invisible when certain people I did not want to speak to found me anyway). It definetely hid you from those who were lazy and just checked the Friend List, but a determined stalker or troll would double check anyway using the search function, and there you were (and in fact it would often cause further problems as they'd then realize you had specifically put yourself in Invisible status to hide yourself from them).

If it was thus brought into FFXIV, it would need to hide you completely, including removing you from player search.