Summarization of Nathan's suggestions:1. Improve connector & layout tools (required_before_further_SMIL_development/biggest_result_for_least_effort)Question: Does this need to be done, independent of adding SMIL functionality?2. Rewrite rendering pipelineQuestion: Does this need to be done, independent of adding SMIL functionality?3. Determine if there is an appropriate existing timeline-based animation tool to incorporate codeMore details here: http://wiki.inkscape.org/wiki/index.php/Animation-(Timeline)#User_interface_for_timeline-based_animation
4. Develop animation feature list (required_before_GUI design/requires_SMIL_spec_review)More details here: http://wiki.inkscape.org/wiki/index.php/Animation-(Timeline)#User_interface_for_timeline-based_animation5. Develop detailed, consistent GUI designMore details here: http://wiki.inkscape.org/wiki/index.php/Animation-(Timeline)#User_interface_for_timeline-based_animation