Hi,

It could be interesting after a checkout (SVN, CVS and others) to count how many
files changed, has been added or deleted, and then generate a trend showing in
Y-axis the computed numbers, and in X-axis, the build numbers.

It could be consider as a maturity indicator of a project.

When it'll appear that there are few or no change for latest builds of a
project, it could helps one to see or declare the project is mature.

I guess it could be integrate directly in Hudson, or as a plugin.