I agree, it's becoming too navigation heavy for larger scenarios and code bases. This is a problem I need to address. Right now you can't "pin" things to another layer and have them stay there regardless of how you move the main layer. I think being able to do something like this might be helpful. After that, I'll have to see what else can be done... I'm thinking global fuzzy search to help get around.

It is becoming [1] a bit more keyboard-able, and being as open as it is, you could pretty much add any kind of shortcuts to anything you want. That's the whole idea that the user is in full control. Right now that part is probably too inaccessible for most people, but it's my goal to make it friendlier to customize.

[1] http://img341.imageshack.us/img341/6977/imageay.png