Cocoon being the megaton beast that it is (takes 45 seconds to start up on my laptop, including Tomcat), it seems to make a lot of sense to repackage my usual kit as a mini-Cocoon. Thing is, I'll have to finish the XSLT-enabled PHP package I need to deploy it on my boxes first.
Nevertheless, a quick glance at the existing code shows that it's feasible to do (provided I build a smart enough pipeline class).
We'll see.