Then you have authors releasing a short story and claiming that's all that's necessary to keep up the copyright. Mickey appears as a cameo in a Disney film and he's back in the vault for another 10 years. (Actually, he's still active in Mickey Mouse Clubhouse, so he's likely to never make it into the public domain.)
Is this much different than the current system of life + every changing number when Mickey is going to expire?
This small change wouldn't impact the big corporations, but it would start letting smaller things fall into public domain. Then, after a while of acceptance, you do something like limit the number of renewals, make it price prohibitive to renew more than 2-3 times, or limit transferability.
Or you could go for a big bang change and hope you have a critical mass of votes.
