So I finish out the Plasma::Package support and
blog about it. At the end of that, I email Sebastian saying I'd like to get Superkaramba supported in the same way as Mac OS Dashboard widgets, especially since Superkaramba is a lot more "native" to KDE in the first place. My email is sent off to ask what the mimetype for Superkaramba packages are. But before he reads my email, Sebastian has already gone crazy on the ScriptEngine front and done all the work. I see his efforts pour through on the commit list. The result is equal footing for Superkaramba in a very visible manner, as you can see here:

So now as a user you can load your favourite SK widgets, and as an SK developer you can continue to utilize your knowledge of SK theme creation. Even better, you can use things like Plasma DataEngines in your 4.x SK themes, and now we can load them from files in a nice user-friendly manner. (Sebastian also covered off some UI details in the dialog before I could get to them!)
I love it when a plan comes together. =)