First part yes, second part: when I press Ctrl+Return on my File Filter with a limited scope (keyword is 'fonts'), it brings up a Web Search with 'fonts foobar'.
Yes! Except, Alfred also uses whatever is highlighted in the search result instead of my original search term, i.e. if I activated the workflow using 'find helvetica', and I pressed Alt+Enter, instead of showing a finder spotlight search looking for 'Helvetica', it's looking for the highlighted results 'HelveticaNeueeTextPro-Bold', which is not what I want.