Can you just automatically search the global address book?
I would LOVE this to be an option.
Yes please. At least make it an optional preference.
When I start typing an address I should be able to hit a button (like tab completion in Linux) that will cycle through matches in the union of all my address books (including the GAL, which could be cached locally). No pop up window.
At least cache frequent contacts in this manner a`la gmail...
Yes. All in autosuggest with little symbol for gal or whatever on the side. If necessary to know from where the contact is.
You won't be notified about changes to this idea.