> Most of your time is still spent editing text. Or if it isn't, you're not getting enough done.

Are you sure? I would expect that the process of physically typing in the changes you want to make takes only a fairly small amount of time, certainly much less than understanding the code that will be changed or designing the new part.

However, the typing is just mechanical grunt-work that tends to distract from other areas. If it can be automated with good refactoring tools and the like and so minimize the distraction to the developer's thought process then so much the better.