Personally, no source mode is a huge disappointment. As someone who prefers speed, not being able to use source code is just way too slow. (In most cases, I can type the code version faster than a WYSIWYG editor can keep up. What takes me maybe 5 minutes to do in markup/source/html/etc. might take me an hour to do in a WYSIWYG editor. Why? Simple: Processing time. When you can type very very fast, typing as source has next to no delay. On a WYSIWYG editor; however, you have to wait for the system to process. And if you need to use the mouse as well as the keyboard, that is more slowdown due to having to move your hand over to the mouse and then back...) Also, there are some issues with a lack of source mode like certain elements (such as quotes) being difficult to remove.