Yeah, when I was looking into this stuff it was sad to see the blog post about why Trino had to switch names. Unsurprisingly given the history, the Trino blog was the only place I could find written-up details about things like how to name files so they work with the new version of bucketing. The new features look really neat and hope the project has (continues to have) success!
Yep! I had a situation where I wanted more than one file per bucket (for the sake of other code that uses the same data), and needed the improved bucketing for that.