I would be damn great if it would be possible to select all search engines which support advanced syntax like inurl and site with "one click". If search only for urls or search site lists are used, it really sucks to select the wanted search engines again and again.
The perfect way would be:
1. Right click into SE, select "advanced SE"
2. Choose Country/Region (which reduces using of Google only to the relevant regions instead of using all Google Sites)
3. Autoselect select only SE with advanced syntax support (or auto-translation of this syntax) of the relevant regions.
This would save a lot time.