Inventory on different platforms question

[Callinon]

Saves on bandwidth to have the information stored locally.

Not really. The client could handle this sort of thing until logout, during which the data is sent to the server to be stored with the character's own data. Then the data is sent back on login. There's no need for a continuous update for this stuff. If we're worried about a connection failure screwing with it, maybe we send it to the server whenever a zone change happens. That would keep it relatively up to date.

Additionally I should point out that every MMO on the face of the planet EXCEPT FFXIV does this without a problem.