Google Search - feature request

Great plugin
5 Stars no doubt in my book

One thing i would love to see in this though is the ability to choose specific site searchs....

Right now you can set up your custom site search at google with multiple sites, so
http://www.blah.com
http://www.blah1.com
http://www.blah2.com
When you search it will search all of the listed sites, now this is great, really great.
What would be amazing is if we could get a droplist, so when we search we would have the options of..
Global
Blah
Blah1
Blah2
So that all sites (Global) or only specific sites out of the list could be searched, thsi would be a massive feature.
I am no sure the Google API itself would allow this but it would still be easy enough tod o witha user defined list.

Cheers