Ok, I took "inspiration" from the other locales and created a version of the Greek charset where the accented Ή has the accent mark on top of it like in Spanish and French. I copy-pasted the fonts.json from Spanish and it works fine. The only difference is there's a wider space between lines but that's not really a problem. Other than that it's the exact same thing as what I sent you earlier. You can download it here. I think it should be the one to use on the stable release. Feel free to check it out and tell me what you think.