Hightower’s support of Aegon the Conqueror could foreshadow Hightower’s support of our wee Aegon. Manfred opened his gates to Aegon, and Aegon was crowned by the High Septon, leader of the Faith, of which Hightower is the most prominent supporter. Notably, Lord Manfred Hightower heeded the advice of the High Septon, and refused to march with King Mern of the Reach against Aegon the Conqueror. House Hightower, of course, was the most prominent supporter of the greens in the Dance of the Dragons, and at least some Hightowers supported Daemon in the First Blackfyre Rebellion. I think Houses Hightower and Redwyne might be on Aegon’s side already.
I think they'll declare for Aegon after his forces save Oldtown from the Ironborn attack, and he'll be crowned there like Aegon the Conqueror, as the crowd cheers for the mummer's dragon.
