Well, "all my ships" sounds a bit to much. Normaly I have the Asp an Vulture a Curier and sometimes a bigger one.
But I did some estimations: So with that delay option I had to wait 100 minutes for a transfer of about 300 to 400 Ly.
That's not faster or more convenient than getting a taxi cobra and bring my most important secondary ship to the new port.
So that new feature would be for naught.
And as the options where 100 minutes delay or no delay I voted for instant execution, as I said 30 would be a perfect compromise and could even be explained with a capital class transporter lore wise.
You really should properly read the options before voting.