I think that the 46 year with sliding fee proposal is more than adequate and in keeping with the intentions of the founders.
Quote: A. Free 12-year copyright term for all new works – subject to registration, and all existing works are renewed as of the passage of the reform legislation. If passed today this would mean that new works have a copyright until 2024.
B. Elective-12 year renewal (cost 1% of all United States revenue from first 12 years – which equals all sales).
C. Elective-6 year renewal (cost 3% of revenue from the previous 12 years).
D. Elective-6 year renewal (cost 5% of revenue in previous 6 years).
E. Elective-10 year renewal (10% of ALL overall revenue – fees paid so far).