Optimize the loading of tags. Maybe the page could use AJAX or have an option to completely disable the loading of tags.
I maintain a Hg mirror of an SVN trunk with over 15000 revisions. All revisions are tagged svn.xxxxx. I found that in all pages of this project http://bitbucket.org/suriya/jikesrvm, each HTML page is about 14000 lines long and more than 99% of these lines are to list all the tags. This wastes server compute resources and bandwidth.