Something I've realised while looking up when certain characters enter public domain for a Wikimedia article is that UK copyright terms are actually WORSE than American copyright terms. "Death + 70 years" registers in the mind as "lower number = shorter", but it adds quite a few extra decades on to roughly the same length as the US term, as well as more ambiguity between who can be credited as an author - thank god for the rule of the shorter term.
I generally don't like Death + terms, it's a nice idea to eliminate copyright as soon as there's nobody who can reasonably take primary credit, and it has the benefit of having an entire world or library be avaliable at once in the right scenarios, but you either A. create a huge, hard-to-track instability in when content becomes PD, or B. practically encourage waiting for people to die.

I generally don't like Death + terms, it's a nice idea to eliminate copyright as soon as there's nobody who can reasonably take primary credit, and it has the benefit of having an entire world or library be avaliable at once in the right scenarios, but you either A. create a huge, hard-to-track instability in when content becomes PD, or B. practically encourage waiting for people to die.