I have written a plugin for IntelliJ and Sencha Touch projects.
So far I put icons to the tabs (different ones for View, Controller, Model, Store, Util) and put a slight coloring on the tabs. The same icons go for the treeview explorer.
Plus whenever you create a new file a code template is added based on the file type.
Anything else you could think about to enhance workflow?
I put it all on my website >here<.
Until now I was working with life templates, but this is way faster now.
The main reason to write the plugin was to be able to see right away, which of the "Main.js" is the view and which is the controller. Sometimes I even had a util class and/or a store of the same name.
And I've changed the shown names, so that whatever directory underneath the MVC structure is shown in the tab too. So if I have two "index" views each shows the directory in the tab before the filename.