Several piwik instances showing in one frontend


Hi Forum

We know, we are able to insert several websites in one piwik instance with one database.

What I search is a possibility to add the data of several piwik instances
(on several webspaces with databses) to one central frontend.

I would like to configure the database connection for each piwik instance within
the website configuration dialog. So this central piwik instance could get
the statistics for the several websites and their databases.

Did someone think about this? Is there any solution our there?
many thanx for your responses.