Yes. As new ancient Greek, Balkan, and Mediterranean genomes are published, as reference panels get expanded or re-balanced, and as the methods improve, your ancient matches and the way we interpret each anchor can change.
The places where future data could meaningfully sharpen the report include Bosnia and Herzegovina (currently n=1), the Pontic coast of Türkiye (currently no direct samples), Cyprus across the post-Bronze-Age eras, Greek Epirus, and the Greek Ionian islands.