My position is that it's fairer to allow everyone to have their abilities in full, but there is a point at which that becomes disproportionately unfair to everyone else on board, if the Inmate in question is here partly for acts of unmotivated or unpredictable violence committed using their abilities.

Because of that, personally I don't restrict my Inmates' abilities unless they've made it obvious that the immediate threat posed to the ship or the crew is so great that it outweighs the damage done to the Inmate by their being restricted. And what I definitely won't do is hold an Inmate's abilities over their head as reward or punishment. I would consider that unreasonable to the point of cruelty.

[Also Omega can take a long walk off a short cliff but her less-civil threadjack should have made that obvious.]