Sure. With the ticket booths on the I-4 off ramps instead of only at the park entrances, they would be able to eliminate any traffic just passing through. Benefit Disney, less traffic in general. Probably speed up the bus transit times.
Having the first backup of people a I-4 would meter the traffic into Disney and reduce the lines that form at the park entrance booths. Alternatively, reduce the staff and keep the same size lines. Benefit Disney, less staff.
The huge line of cars that backs up onto I-4, that's a county or state problem now.
Limiting access to Disney Springs would probably be bad for Disney Springs, maybe put that booth on the west side of Buena Vista drive instead of the east side.
This would clearly be ridiculous and points out why RCID is responsible for lots of stuff that isn't private Disney infrastructure. Even when Disney owns the majority of the places that infrastructure goes.