Would it be too late for changes? I discovered a pixel drawing program and experimented a little. I managed to re-draw some of the assets. Specifically, the two charset files -- I redrew Δ, Λ, Φ, Ψ and Ω to make them look more consistent with the rest of the font; the 3 level signs -- I changed the letters from capital to small (ΕΠΔ. -> Επδ.) to make them more consistent with the English versions; and lastly the "new" text -- the Ο is just a little thicker, not sure if it's an improvement or not. I'd like to say since this was the first time I was ever drawing pixel art and there may be imperfections (for instance I noticed that Φ and Ψ don't have a black margin to their right), so please feel free to judge as to whether they can be used in the final release. You may download them here to check them out if you'd like.
EDIT: I also noticed I had made 4 mistakes in the translation, which I've now corrected. You may download the new version here.