Partitions, topics, and ROS namespacing

[spiderkeys]

I've been reading up on the topic and service mapping article, having seen that the partition PR landed back in March: https://github.com/ros2/design/blob/gh-pages/articles/140_topic_and_service_name_mapping.md

I wanted to feel out how "locked in" this design decision is, as we are building a product on top of RTI DDS with the hopes of running full blown ROS 2.0 once it gets out of beta. To that end, we are trying to make sure that we make decisions around partitioning and topic names that are forward thinking and in line with what you are doing. The concepts settled upon seem very sound to me and I can't find any red flags or deal breakers.

Any expectations of there being major changes to this part of the architecture beyond this point?