I just committed the start of inventory overflow. The last time I tried to do this I was overthinking the issue, this time it is a much simpler implementation. So far it handles adding an item to overflow and saves and loads it from the DB. Fixed a few things so mouse over and right click examines work correctly with overflow. As for getting an item out of overflow, only dragging it to the auto inventory works so far.

You can now get an overflow item out by using auto bank, dragging it to an empty slot in your inventory, bags, bank, bags in bank, or shared bank. Basically any way except to an empty equipment slot. I tried to get messages from live but it seems that live no longer lets you craft when inventory is full, or buy items, or generally let you get overflow at all. Only thing I didn't try on live was doing a quest with an item reward.