Stuart Marks and Nicolai Parlog recently had a discussion about checked exceptions in the Java channel [0]. In short, while they mentioned that there are certainly some things to improve about checked exceptions, like the confusing hierarchy as well as the boilerplate-y way of handling them, they're not necessarily a failed concept. I do hope they get to work on them in the near future.
0: https://www.youtube.com/watch?v=lnfnF7otEnk