sorry if this was already discussed, but even though nukes is really is CMS there is a lot a crossover between cms and portal systems, so has there been any thought on implementing modules via the emerging JSR portlets standard? basically just a generic way to define modules so they can be used across implmeneting portal systems. http://www.jcp.org/en/jsr/detail?id=168 is the JSR home.
and as luck would have it, I just saw a message a few topic down already mentioning this, sorry for the repeat.