Hello Hans,
I was a little bit irritated about the various comments concerning future PCB boards.
Your project is not a one night stand. It is here to stay and to get developed by you and the community.
So I would vote for a clear revision history of the boards and the documentation. Print the revision number on the board and on the files and print them in the correct way so that lazy or knowing people can solder as indicated and don't have to struggle with mental corrections.
On the subject of heat sinks I am biased. These transistors are build to like some heat ...
72 de
Hajo dl1sdz
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... indessen wandelt harmlos droben das Gestirn
...
