Just installed the latest build, seems to work.
All it is is a scripted svn update and an exe build with the installhammer script inside the repo. It runs once day. I agree that incremental svn updates are better, but not everyone can or wants to mess with subversion.
I'm not entirely sure how that whole install script stuff for installhammer works - I think it just grabs the whole mod directory, packs it up, and unpacks it upon installation. Since the script is in the repo, you have control over it. It does force some variables, because this script hadn't been updated in aeons and I don't have write access to the repo. It sets the version to 2.0 and adds the current build date.
Code:
svn up rand
cd installjammer
INSTALLVERSION=`/bin/date +%y%m%d`
./installjammer -DInstallVersion 1.0.0.0 \
-DVersion "2.0 svn $INSTALLVERSION" \
-DPackageRelease "2.0 svn $INSTALLVERSION" \
-DPackageSummary "2.0 svn $INSTALLVERSION" \
-DPackageVersion "2.0 svn $INSTALLVERSION" \
-DAppName "Civ4 - RoM - A new Dawn" \
--platform Windows \
--build ../rand/A\ New\ Dawn\ Install\ Script
Since it's build on a linux server, it should also always be virus free.