We had the sky map, Land map, and Depths map.
We could have had massive temples floating in the air with different bosses, ones on land hidden away, and even ones lost to time in the depths we could have stumbled upon and learned lore about while fighting creatures that "ancients" had locked away. That could have given us 12 unique story bosses at best. Minus the final boss.
It may just be me but I feel like the huge maps felt way smaller than they really were and more could have been done.
What's your opinions?