I find it slightly odd that I never got a reply to what I believe were simple questions.
As for the reasons, I can only speculate - I am assuming it is because what I am trying to achieve is probably not possible with the current version of Piwik (as I have found out by now).
Just not getting a reply at all, however, has this vibe that it was me who asked a wrong questions. If that is why, I would like to point out that, in my mind, the sole point about using Piwik is to have control over one’s own data and do with it what the heart desires (if I want others to tell me what I can do with my data, I can also use Google Analytics). So in that light, getting the feeling that there are certain things I am not supposed to want to do with my data just feels a little bit strange.
If that is not the reason, please disregard this post.