Review?

Hope your license compliance is up to scratch too :)

Have a budget for contributing back financially with direct donations and or sponsorship.

Have a team working on contributing back code and otherwise participating in FOSS communities, joining forums, mailing lists, conferences etc.

The unmaintained/undermaintained projects are the ones that need you to assist them *more* *instead* of ditching them.

Since you are a hardware company, please consider making it simple to replace your software/firmware with open equivalents.