I found this. I think the references are interesting for later.
The feel for myself is to continue on this path from features, to plug-in, to RCP, to OSGi compliance, to changing Eclipse in clojure without needing to make Eclipse into an RCP that is no longer Eclipse. Although eveything is an option once I arrive closer to it. It might not make sense to allow regular Eclipse plug-ins to freely operate in the end product. Although that is essnetially what I want when I eye things like a GUI builder, SVN clinet... etc.
So, I don't know. This is a distant bone that my mind wants to chew on now when I'm not coding but still want to code "virtually" in my head. I'd like to direct it to more immediate bones, which it is accepting... or just calm down as a practice.