A few small suggestions for the casino and the editor:
-When placing and upgrading show time needed indicated by a clock icon as a stat.
-When placing an object use rotation of previous object.
-Enable moving of elevator door (moving it on 1 floor obvious changes it on other floors.
-Have slots take 6 instead of 4 squares. With provisioning of 2 squares in front (where the character stands) in order to prevent stacking/farming. These 2 squares could or could not be used as an aisle (choice of developers). So you could place your slots such that they share the 2 squares in front of it (if they face each other).

-When opening elevator window color the current floor with a different dot (E.g. red/green dot instead of blue)