It's a matter of weight.Can the elevator of 003 carry three planes like this?
And it's also a matter of time. It takes a long time to position aircraft so precisely on the elevator. He went up and down twice in the same time.
But in a locked upper position you can safely use it as a parking space for such occupancy.
Typical elevator capacities of American aircraft carriers are:
CV 59-62; 66-67: 36 tons
CV 63-65: 40 tons
from CV 68: 48 tons