I LOVE THIS IDEA!!!!!!!!!!!!! It would be awesome to have Greek letters. Or maybe they could be used for levels/ranks in the game like when your level 30 with Ares, your an Omega Gamma Beta (OGB) Ares warrior. That would probably take quite a bit of programming so I know it wouldn't be used but still would be awesome. I just hope they don't make you pay for it or at least not alot for a Greek language pack for the game. $2 max though it should be free.
As you level, they become available. Yeah, that'd be awesome (If it doesn't make it to our clan names. Really hoping it does, though).