Components are king in the world of pluggable ESBs ...
In the world of light-weight pluggable ESBs supporting a SOA approach (or EAI, or MoM, ...) the richness of the component ecosystem is a very important aspect. Part of Project OpenESB's purpose is to provide a standards-based framework onto which components can be fabricated and easily deployed.
Recently Frank implemented a nice page redesign that lists the components and allows you to select different views, such as by contributor, by status, etc. Nice job Frank :)