Last December I launched my microISV. The product idea was to sell an ever growing collection of "shorts" on how to use the Eclipse IDE. I use ViewletBuilder which curiously enough is used by a majority of the other Eclipse vendors.
Anyway, the you can see a trial version here: www.oneclipse.com/products/essential-eclipse/trial.html . Let me know if you want to view the fullversion. You might be able to use it to gain better insight on "deep structure editing".
Carlos E. Perez