mount..?
As far as I know there isn’t a program that allows you to mount a subversion repositry into the linux filesystem. This would make managing a subversion reposity a bit easier for at the moment you need to use svn add to add every single file; svn cp to copy, svn rm to remove, and so on which could all be intergrated when wrapping a repositry up.

It is possible I haven’t been searching in the right place. Searching for it just gave me an enourmous list of other people graving for it.

pruning
To my knowladge there is no really easy way to get rid of older versions. Offcourse it would be against the basic idea behind the system storing every single version, but sometimes it just isn’t practicly. In case you are dealing with extra not sourcecode files, like images or data files, which usualy are quite large in comparison with source code, you’ll get a really big and slow repositry.

Adding a feature that will store all files before version x if it isn’t the top version in a compressed archive of some type would be really nice. Although it would drasticly decrease the access time for the older versions it does decrease the space used and increases the access time for the top versions which are used a lot more than the older ones.