Well I make full use of escape as it is. If you are in results list and hit Esc you go back to the search bar.
The only small improvement I want for Escape is when I return to the search bar to have the previous search highlighted. Now the cursor stays at the end of search text. Please make it to highlight all the searched text so that the new search starts immediately.
Screenshots of what it does now and what I suggest
Latest FARR v2.00.140 ALPHA PREVIEW Release - Aug 15, 2007
Latest FARR v2.00.140 ALPHA PREVIEW Release - Aug 15, 2007