added a comment - - edited
I'm not sure it's the same thing as mentioned by the original reporter, but from what I saw while working with Maven and from what I see the developers needing, the default mode is ok (verbose).
The debug modes could be improved, however, for example:
-X, --debug -> default debug output, without classloading information (no dependencies, and especially no managed dependencies)
-Xd, --extra-debug -> extra debug information, the current -X
The current debug mode usually has something like 1% useful information while debugging plugin problems, configuration problems. We have hundreds of thousands of lines of lines showing managed/transitive dependencies for big builds, when all we want to see is: what was the real parameter used by Maven when launching the jarsigner (for example)...