[HiramNetherlands]

Excellent ideas! But different users want different things, so I think this is best dealt with in preferences. Having a one-item-is-visible Inbox, in a separate window, and hiding the context and project columns in the Quick Entry windowlet would probably not be too hard to implement as user preferences.

I am new to GTD, but I would certainly give such a more 'orthodox' use of the Inbox a try.