One major problem with FFXIV imo is NPC names. JP and NA (pretty sure it's same for EU and DE version)
Not so easy when saying talk to friends or someone about NPC character/mobs.
Hard to say stuff like lets go kill (NPC name) or Go talk to (NPC Name) - since the NPC name is different by locale... some just JP names just use katakana so can try to say the English name from that but some mobs... doesn't work that way.
Same thing for leve names but they added leve names to dictionary so that part can be worked around.
Does <t> even work properly still? I haven't tested in a long time, if I'm on JP client and do <t> to a mob to show NA player, on NA players client it still shows up as JP name :( I know reps responded on this one also.
