Hey Jabier,
If we can't have it included in this release, it's definitely not the end of the world. You have added so many other great features. If users are using an unstable build of Inkscape (trunk) they should be aware that we can turn off or back out new features at any point. That said, I wish you luck in finding the time to address the issues Krzysztof raised, and honestly, in cases like this we can make exceptions for a grace period (like and extra week) into the release process if Krzysztof gives approval of the code before re-enabling.