I haven't really thought about that. That is actually a good point, it does create a thing to talk about and while its "value" might get lost at the end, it does gain some interest in the start.
It will be a good way to do it, IF it does not take away from the creating of goals from the other characters. If Egwene, Nyneave and Mat still has to be potential dragons to the very end, i do think it will leave them with very little when the season is over. It will take a lot then to restart the importance of these characters, since Rand will then take most of the focus.
Thanks for pointing it out though. I have planned to watch binge this with my girlfriend and i think she will enjoy the mystery more now that you have pointed it out to me