yes, it will be a Good Thing (TM) when they are removed
But as discussed before on the dev mailing list, this would require upgrading prerequisite to Maven 2.0.6, which is not wanted for now
Now, please don't over-react: "only" XML encoding related classes are copied, which I'm maintaining and don't change much.
Today was the first change in 6 months, and yes, I had to copy the change to 4 components: it was a known compromise, I assume it and did the changes.
This time, I created corresponding issues in Jira to track it, and made links in the Wiki entry, so that everything is tracked as much as possible.
If you convince everybody to upgrade Maven prerequisite to 2.0.6 for one of the 4 plugins, I'll be the first to drop the copy