I doubt that, because I think it's already implied that Zeno is the shield. He can't really die, and I think sometimes his body is impenetrable?
the sword and shield in the prophecy are others apart from the 4 dragons so maybe is hak and yoon? or other people that dont appear yet
No, I checked and at the end of chapter 99 or 100 Zeno says he's the shield.
I still strongly believe Soo-won is the sword. Hak may not be the shield but there is still a very high possibility Soo-won is the sword.
I think that's where Hak actually comes into play on the shield. Remember, Soo-Won is against the Four Dragon Warriors with Hak and Yona, so if he is the sword, he won't appear for a long time unless he's dethroned by the 5 Tribes, which again seeing as how there is no real dethroning conspiracy it'll be a long while. However, this is where Hak comes into this. Remember that he protected her with the spear until Zeno came. Hak is a strong weapon for the group, though human. I may be wrong, but I do think that Hak is the sword, while Zeno is the weapon. It would make a lot of sense, really.
I think someone has said this before, but its possible that the sword and shield from the prophecy are actually Soo Won and Hak. I remember Ik Soo saying that the sword and the shield might take a bit more to appear, so maybe he was saying that it'll take some time before Soo Won and Hak will work together again, and when they do they'll be the sword and shield ٩(๑❛ᴗ❛๑)۶