EDIT: Not sure if this is in the right place, should it be in speculation? Many apologies if so..
Been thinking about the rumor of projectors inside the station building and thought they could be used to create a dramatic dispatch similar to that of air's. This would create excitement before riders are even on the ride waiting to be dispatched. I've taken sources of inspiration from images released from alton towers and will quote these at the end of this post.
The riders board in bright hospital-style lighting with the addition white flicking medical lights. The walls are bare and clinical to follow the theme. TV's above the station gates showing an EKG monitors (heart-rate) with the numbers 1-4 on each screen representing the car's rows. A EKG sound effect is also heard (those annoying bleeps) which get progressively faster as riders board the train. The monitors also show more sign of activity, suggesting riders heart rates are increasing. Other hospital ambiance can also faintly be heard.
Once the car is about to be dispatched, the lights drop to reveal the walls plastered with spinning smiler faces, MOJ logo and swirls, either from projectors or could be painted on the walls in UV paint with blacklights. Doctor Kelman appears on the TV's saying "smile. always." or "Get Corrected", in the similar style to the sanctuary pre-show videos. Along with this chronic laughter is heard, slowly getting louder until the car dispatches where it suddenly stops, allowing the rider's scream from the indoor drop to be heard by those waiting in the station.
Once the car leaves the station the lights come back up and projectors fade. The TV's go back to the EKG and row numbers for more advocates to be allocated to their seats. The cycle then restarts and is repeated on the next dispatch.