Please allow us to change S3 server information. We use DreamObjects as a drop in replacement for S3 on all of our apps and we would like to use DreamObjects in place of S3. To implement this, you will only need to allow us to define a server on the setup fields that you currently prompt us for. Obviously you'd leave Amazon's servers in for default, but allow us to change these.
Custom S3-compatible backup locations
With the advent of S3 backups, allowing for arbitrary ceph locations would be greatly beneficial.
As long as you can change the ceph domain (from s3.amazon.com to whatever.myceph.com) then the majority of aspects work out of the box. That would let people use any host/ceph service they want :)