This is definitely an important feature for the long time future of piwik, but it needs major changes in Piwik and probably won’t happen soon.
You can find more information here:
Thank you for your quick response. I just thought it’s just too good to be true
I still love piwik anyways, this combination with the server logs would make piwik the ultimate tracking software because as the OP on github said
all visitors are tracked -always
Anyways, I went on in creating a separate website tracking profile to import the server logs separately but run into a different issue: Cannot connect to piwik when using import_logs.py to import server logs