This is an ever-changing list of development priorities for the maintainers of librsvg. Check this often!
Switch from autotools to the Meson build system. This may make it easier to integrate the Rust-based gdk-pixbuf-loader from the last point.
Fix issue #778 about incorrect offsetting for layers with opacity. Solving this should make it easier to fix the root cause of issue #1, where librsvg cannot compute arbitrary regions for filter effects and it only takes the user-specified viewport into account.
Continue with the revamp of Text layout in librsvg.