The Wall will fall but not via Ice dragon fire. I’m not sure that your idea of how it comes down will play out as I think it has more to do with the men of the NW not “staying true” as Old Nan said the Wall would hold as long as they did so.

Dany’s vision on the House of the Undying of Rhaegar, a woman and a baby is a bit misleading I think. Looking forward to more of this my friend.