Thank you for sharing those projects. I've incorporated support for eventlines and point triggers into SpriterKit now at: https://github.com/pkclsoft/SpriterKit
It would be great to have an actual specification of the latest SCML/SCON documents from an implementation point of view. I'm holding off adding the variables thing because there is no real information as to what variable types (other than I think String/Float) are valid, and how the engine should treat them.