Just visited Solarium, Arboretum and Festering Halls on Titan and I love it. I aimlessly wandered there like 15 minutes just looking what's there. Kudos to anyone who invented this. I know it's not a purpose of this game, but I wouldn't mind more locations like this, I don't mean not lost sectors where some npcs try to gun you down but just corridors, halls or valleys, streets and nooks and crannies where there is nothing to do except exploring. I don't know, maybe there's some quest in Arboretum later in the game, but even if not great idea.