It's an interesting project but post-DAFIF (closed in 2006) they will have the same issues as everybody else who has tried to "conquer" the "me have copyright" world of European mapping.
Apparently, not anymore. As I'm told, government-owned mapping information in the EU has been mandated by the new legislation to be available free of charge for non-commercial use. It has not yet been implemented EU-wide, but I have successfully downloaded topographic maps of several EU countries from the national map servers. I'm not sure about aeronautical information, but I suspect that if some countries like Germany keep VFR charts unavailable for free, it's only because no one cared to enforce this through the court or through their friendly local MEP. Please correct me if I'm wrong.