> But the same goes for Google Docs and OpenOffice
I beg to differ. Google Docs does provide some important features which OpenOffice doesn't provide.
However, I didn't find any such thing in SVG-edit.
> Having more features isn't always what matters most.
Apart from stability (which could also be considered a feature), what else are you talking about? The set of features determines the usefulness (or uselessness) of an application, doesn't it?