Honestly I'd love it. Make Cavern of Times a city, make Timewalking a constant and complete feature and have a story about Murozond that involves us traveling to different points in time and stopping him from messing the timelines. So many points in time I'd love to visit; Troll vs Aqir war? War of Three Hammers?
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I am also surprised they did not do a "dungeon" that involved boarding an enemy fleet.