Just to chime in here: While I find the new global inbox useful, the transfer of a new entry into a specific group in the database requires too many steps.
Create a new entry, say in a browser.
Move the item from global inbox to database inbox
Move the item from database inbox to specific group.
Delete item from global inbox.
Christian says that step 4 will be eliminated by the next beta. But is there a way to combine steps 2 and 3? Would it be possible to display the tree structure of a database on the second pane in three-pane view when you’re in the global inbox? That way, I wouldn’t have to move the item from the global inbox to the database inbox but could put it directly in the group where it belongs.