I saw it said somewhere on the last few pages (can't find it now) that The Sugar Daddy stage was kinda samey compared to Luna Station, and that was something you were looking into. For inspiration I would definitely look at a "
used future" sort of aesthetic for the Sugar Daddy, in particular The Bebop from Cowboy Bebop. Nothing too grimy (Cid would be pissed if they let her ship get dirty), but a bit rusty and full of various personal objects like old furniture, various military banners and the flags of unknown/alien nations hanging up high, or weapons left leaning around or on racks. The empty starport that dominates the background is ripe with possibility, musty couches and beach chairs facing the glass, maybe a television (or future equivalent) out there, weight lifting equipment, training dummies, anything. You could make it look really lived and go crazy with the details!