It has so many varied locations now with the Menagerie, Underbelly, Spire of Stars and the rest that with a few more connections and tunnels it would make for one enormous and cool patrol space complete with a NPC vendor (finally add Gus the slovenly) and even unique public events.
Consider.
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lol! Tomorrow morning in the think tank. Bungie brainstormer- “I have a great idea for D3 DLC! We open up the Leviathan...”