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.
You can end up with a mapping product which is reasonably OK for the regions where you put in a lot of effort to get the data from the AIPs (in practice it means from a combination of Eurocontrol and the AIPs) and "other sources" to get e.g. unlicensed airfield data, and even then you end up with a load of crap in departments like airport details (try doing a trip to say Greece, using the Jeppview text pages for amusement) except in regions where the data gets thoroughly thrashed by pilots (e.g. Skydemon is getting well thrashed by UK pilots, especially in the south east) whose primary language happens to be the one of the data vendor so people can be bothered to report errors.
This is why I still do VFR flights using Navbox. It has a fairly wide European customer base, established over years, so stuff gets reported back.