One useful item would be support for multiple RCS systems simultaneously. Example: * root refs: git://.... branch wiki * master refs: git://..... branch master * dev refs: git://.... branch dev I'm not sure how the mechanics would work out for choosing between what to refs and managing branch self-references (though doesn't ikiwiki do something like this: * 1 * a * j * b * Page : refs a/j * 2 * a * j * b * a * j Ikiwiki checks: 1/b/a/j, then 1/a/j and succeeds... The new git subprojects might work, but I've had trouble making them work sanely in the past...