E quanto StatSVN ? Eu acho que chega perto do que você está procurando. Do site deles:
StatSVN retrieves information from a Subversion repository and generates various tables and charts describing the project development, e.g.
* Timeline for the lines of code * Lines of code for each developer * Activity by Clock time * Authors Activity * Author activity per Module * Author Most Recent Commits with links to ViewVc * Stats per directory * File count * Average file size * Largest files * Files with most revisions * Directory Sizes * Repository Tags Number of LOC per version. * Repository tree with file count and lines of code * LOC and Churn the evolution of LOC and the amount of change per day * Repo Map the dynamic hierarchical view of your repo for the last 30 days