I hope eventually the cultural consensus on current copyright law shifts to be more negative, so that it can eventually change. There are international agreemen

I hope eventually the cultural consensus on current copyright law shifts to be more negative, so that it can eventually change. There are international agreements which probably would make it hard for any one country to significantly shorten copyright duration. I think a "reasonable" transitional copyright duration would be something like 70 years from publication. Basically the length of a life, strictly shorter than it is currently, not so short as to make corporations extremely upset, and no potential perverse incentives to kill someone to end their copyright. Shorter would be nicer though.