I am definitely no professional, so I can just tell how I work with al lot of different Pages.
Thanks to the template function I have first made a Header with all links and a footer in the global area.
If there are changes you simply add these templates as a new page to the project and blocs will ask you if you want to adapt the global areas.
I have done this in blocs version 2 and noticed that images haven´t been adapted.
This might be better now in version 3.
On the server I have created folders for each project (with an seo friendly name).
There might be a better way to work and I am also happy for every suggestion.
Folders in blocs would be great but I have no idea what this would mean to @Norm .
Currently it would be helpful to have the possibility changing the order of the sites.
I know it´s somehow possible but couldn´t find an easy way by know.