Many man-years of work went into Pagedraw. Not trying to beat up on this project, but to look at its characteristics, and see why it might have been abandoned for technical reasons. I can see a fundamental design decision which was to split the code and draw phases apart, and have a different toolbar control set for each. This creates a situation where you have to remember what one side expects from the other. This means a very high memory requirement for the user of this tool. So this is the Achilles heel of the approach. Part of that comes from the desire to import from Sketch, which is by nature going to drive you into a split world. Anyway i think the real problem with the project was revealed when you examine the dependency graph; it has 136 dependencies. To me that means no single person could ever understand the product from top to bottom.

I like the multi-state group UX