https://youtube.com/watch?v=3-K1GL9mYy8
One thing I appreciate about Up Your Arsenal and Deadlocked is that they gave you a "downtime" planet as a hub of sorts between missions. Up Your Arsenal had the Starship Phoenix and Deadlocked had Dreadzone Station. Moreover, the Starship had activities within the planet. Video games, VR training for weapons, armor vendors, even just causal banter between the crew.
And that killer soundtrack.
I do not think that sorta thing came back in later entries. I'm aware of the Insomniac Museum but that was more of a "secret" than anything official to unwind to.