I would like to be able to switch between the source code and the binary representation of it like I can do that in UtraEdit.
It may not sound useful at first thought but I use Visual Studio for that purpose to read/view/edit my program text files, help files, HTMLs, etc. And I would be glad to have s simple tab at the bottom called "Hex View" and avoid using Visual Studio for that.
The second reason I prefer VS over Delphi when text editing is for viewing XML files in an expandable way.
Please at least consider this. I know you already have written an HEX Viewer sample.