I commonly use FilletEdge with the preview on, adding handles and adjusting the radius of handles as needed. One thing which would speed up the process would be the ability to select a number of handles at once (using Shift and Control), and then specify a new radius for all of them, instead of having to pick and modify them one at a time.
The ability to specify a subset of handles and link them would be nice, too.
I know I can change all handles at once with the SetAll option, but for a subset the best I can do is change one to the new radius and then use CopyHandle to match the others to it.
