Dany's Mereen arc is so dope to me. They had so many interesting angles they didnt fully go into - the rebellion from the masters and other slave cities and getting them back in check, the pushback from the slaves who have no idea what to do with freedom, dealing with concerns from the citizens about the dragons, the second sons having to patrol the streets.... I know they was pressed for time to get her off to Westeros but I wouldn't have minded seeing a couple seasons there and what it took to rebuild that region from the ground up.