Do you have an in-depth post on RCs on your blog? If not I think it would be an interesting to cover in depth.
There are some things that aren't so clear to me like the relationship between the hive blocksize and changing the RC costs of operations. For instance, can we make posting cost less RCs without changing blocksize? If so, wouldn't the blockchain just get bloated even though the RC system still shows that people can use the blockchain?