Not a terrible idea, although it obviously penalises individual authors vs big business. I would argue that it should only apply to businesses and inheritors, so that an author could still behest his IP as a worthy inheritance. However, I fear it would result, in practice, in another immediate bonus extension for existing IP (i.e. the Mouse would continue to be owned by Disney for free until 2060). After all, it wouldn't be fair to tell a company they have to find an extra $22b per year from next January.