The Greek question mark is upsettingly unobtrusive. I keep getting counted off for not seeing it.
Yes, that is understandable I'm afraid there's nothing we can do it's part of the language. I think you'll get used to it eventually.
No, I certainly don't expect you to change a millennium and a half of tradition or so. It's just a sort of cri de coeur.
Καλησπέρα. Η εκφώνηση δε βοηθάει (το αντίθετο) να κατανοήσει κάποιος ότι πρόκειται για ερώτηση
You support me? should be accepted.