It would be nice to be able to turn on a visual filter in L4 that would indicate what words folks have already reported as typos--especially when I'm offline, since it is a huge hassle to remember to report them once I'm re-connected to the Internet. Perhaps something subtle like a light gray shading/light red outline behind/around the text.
P.S. Why not cache the "Report Typos" when not connected? Instead, the feature just disappears. [:(]