Multiple Drop-offs

While it is possible to build only one ambulance drop-off zone, it's started to be quite difficult in larger hospitals (as final campaign scenario for the Doctor's Mode for example). Situations like another hospital's ambulance blocking my own ambulance's incoming or vice versa are becoming quite usual.

Also there is only one another hospital's ambulance could arrive what makes impossible-to-cure-patients outcome toooooooo looooong. And this is blocking many of my staff involved in emergency of collapsing persons whom I can't hospitalise tho. Actually it could take half-a-day or the whole their shift just to sit around collapsing one and waiting not-my-ambulance is taking him away.