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XOOPS SVN is nice and as far as official modules and such good, it's a good choice to work out of there. However, I hate Subversion with nearly every fiber of my being. Since this is a public forum, I can't effectively express this sentiment.
In the last year, I started using GitHub for my code repositories with SourceTree as my client of choice.
As far as the module repository goes, I'd like to be able to edit my own uploads in the repository as they get updated. While the downloads have always pointed back to my own site, the descriptions are a touch stale here. :)