Did you lose your job over it?
If you worked on the Mars probe that crashed, please try not to be the First Post, that would scare off too many people!
Should be ST412/ST506.
1. I changed an engine to the reverse rotation direction. OK, it was a 2-stroke engine but anyway. It allowed for a more reliable transmission changing from belt drive to cog drive.
2. Transplanted the electronic board from a hard-crashed ST402 drive to another that had dead electronics to get one working drive.
For some applications performance isn't usually an issue - like notepad. For other applications it may be an issue, like Word and in large scale batch processing it's essential.
It depends on if you want to push for everything being open source or if you just want to spread your pieces as open source. In the latter case the Apache license is probably one of the better with few snags for those that want to incorporate your pieces into something bigger.
A memorandum is written not to inform the reader, but to protect the writer. -- Dean Acheson