I'd say it's more a matter of wanting to keep an eye on all the rogue abilities running around than much of anything else.

( especially with powers handed off at random upon arrival, it seemed in the governments best interest to keep their heroes pacified and pleased. Hook wasn't buying it, he had little faith in their positive intentions. they wanted something, and he wasn't signing any dotted line until he knew what they were after.

and likely, not even then. )

Have you been trapped here long?

( honestly the maddest part of this place is how many people are trapped with such unbelievable abilities, magic and otherwise, and yet no progress had been made in returning to where they belonged. )