I love your Toolbar suggestions. Just like you said, I'm quite annoyed of searching for Items all over the screen, cause i just emptied an unfiltered Toolbelt slot and now the newly crafted items don't appear in the inventory.
Placing ghost's of items I don't own right now, would make my life in ...

Ah you're right.
I just checked the wiki on that one: the fast inserters get 2.3 items/sec.

How about simply changing direction of the yellow belt?
would require a relocation of the inserters too though..