My flavor and aroma hop additions are getting later and later. With cascade I am partial to additions at 15, 7, and 0.... At 30 I think it becomes nondescript. I have always wanted to try chinook late, but never have.
Totally agree on late extract additions. Just enough at the start to aid hop utilization, but the rest at the end. I have to do some more research into the particulars, but it seems to work out well.