I share Greg's perspective. I see the technical arguments but have not seen the benefits that justify the significant confusion.
The communication problems you raise are exactly the ones that we will have with our user community. Given the difficulties you have explaining it to those on centos-devel, imagine how we'll be explaining it to our thousands of users, external support lines and management chains.
I could explain a 7.0 or even 7.0.1406 but a 7.1406 with an associated wiki page would cause us real problems in the field.