Thanks for the info guys.
Jay, is the uberbar the search box in the top bar? My problem with that is it can't find a resource by ID. This ability would be very useful given that many resources (and other things) are referenced by their IDs throughout modx (snippet calls etc etc). I'm sure we could have a nice smart search which when given an integer, returned all resources, snippets, chunks etc with that number in their name/title, as well as all resources, snippets, chunks etc with IDs that match that number. The results could be grouped with the integer highlighted to make it obvious why that item was returned in the results.
(My old SPV 500 Windows phone had the best search function I've ever seen: start typing the keypad and it would return all contacts' phone numbers, dialled, received and missed calls as well as contact names matching the characters on the same keys. I'm sure a nice wee ajax search could do similar in modx. It would be VERY useful).
Going back to my question, there is possibly something in common with my other post here
http://forums.modx.com/thread/97553/how-to-locate-a-resource-in-the-file-tree in which I'm asking about locating (in the tree) resources found in searches. This would be a good reason for the ability to open the tree at a particular place. So if there are any functions buried in the default theme that would allow us to do both of these things - open/close the whole tree and open the tree at a particular resource, that would be great!