I envision it slightly differently: 10 years seems reasonable, however, some exception might be added, specifically scientific articles should be limited to 3

I envision it slightly differently: 10 years seems reasonable, however, some exception might be added, specifically scientific articles should be limited to 3 years max. Copyrights may be licensed, but not transferred. Copyright should not be up for extension and should immediately go to the public domain after the initial 10 years. For works that are continuous, copyright is valid for 5 years from the last major update.