Hello All -
In the event that any of you may find it useful, I've created a small plugin called GotoSelection that will pre-fill a Goto Anything overlay with the current selection (or, in the event that there is no current selection, the current "word" under the cursor).
It is available at https://github.com/FordAldrich/GotoSelection and I hope to have it under package control shortly. I have a few ideas for further development, but of course more are always welcome (as are any comments, problems, etc).
All the best!