The ToC I proposed is just schematic. You have "Tools" under Web Runtime and Native development.

Actually no, you don't need Xephyr etc when you have (e.g. and don't quote me) things like Aptana for Maemo or QtCreator for Maemo with a very simple and well documented installation process with all major platform supported (Windows, Mac, Linux). Then installing the environment is not the big issue anymore.

Same can be done with packaging, by the way. You have some source code, you press a button (some magic) and you have a package.

Native and platform development are not equivalent anymore in Harmattan! Again, look at QtCreator and you will see that it has nothing to do with Scratchbox/Xephyr, etc.

I also proposed a separate "Testing & QA" chapter for all the quality considerations to be taken into account beyond the specifics of Web Runtime or Native development.