[peanut-walrus]

Why the hell is this a name suffix instead of just using subdomains?

myapp-123456789012-us-west-2-an

vs myapp.123456789012.us-west-2.s3.amazonaws.com

The manipulations I will need to do to fit into the 63 char limit will be atrocious.

[kay_o]

Certificate is only one level. One *.us-west-2.s3 can cover all of region.

[cyberax]

I would guess that it can add one more DNS lookup?