Yeah, I even tried to rename the file and give it a .txt extension but apparently you can't change extensions using the "Explore" in Media.

I like the idea of just being able to directly edit the config.txt. However, your idea of a text editor to edit anything would be good. But, in a way, isn't that what the shortcut hub was doing? Maybe some kind of "shortcut hub" that edits the config.xml (or .txt) sort of like what you had before. The difference would be that it edits the file on the sd card instead of device memory like before.