Hi there!
It would be very nice if there was support for the "longdesc" attribute in the image element and the "rel" attriubute for the anchor element. That would improve the accessibility aspects in WYMeditor.
As soon as the 0.3 release is out I will take a look at the possibilities to implement such features (not a complex this i guess). But I'm far from a javascripter, so backup is appreceated