I just want to say, that it is possible to use patterns from several projects:
Open the 'from' projects pattern block
mark all the notes you like to re-use
copy them with ctrl+a
Open a note-block in the 'to' project
insert copied notes with ctrl+v
In some future :) It will be possible to extract sections from one project, and construct a new project around this extract. Lets se if this future also include current humanity :)