I hope these finds result in further study of the ancient Thracian civilization.
When the ancient Greeks came to Europe from Egypt, they found the Thrace already there. They considered the Thrace to be barbarians, as one always finds a foreigner to be a barbarian. The Greeks tried to destroy and infiltrate Thracian culture by adopting their Gods and myths and modifying them to fit within the Greek mythology. This is completely normal and happened a lot in those times.
But modern scientists and archaeologists do not have to follow this.
It is absolutely wrong to believe that all civilization came from mesopotamia to ancient egypt and then went through ancient greece and rome. These are just the guys that won a lot of the wars.
If we look around we can find that there are a lot of interesting cultures and civilizations that have had an effect on the modern world and modern Europe aside from the accepted classics.