Search field enhancements
 

Be nice to see some of these someday. These all should be preferences, not mandatory:

Borrowed from FF Searchbar Autosizer:

1. search box automatically empties on submission

2. search box automatically returns to default engine after a submission using a different search shortcut

3. search box automatically expands when typed in, user-configurable

From FF and Inquisitor:

4. Suggested search term completions. IMO, Inquisitor is nicer.