While we're on the subject of controversial abilities, what would be your opinion of scrying? I'm thinking it would be an interesting ability for Vincent (my character in progress) to have.

The restrictions for his particular variation of the ability would be that it requires one of the possessions of the person being scryed, and the more contact that person has had with the object, the clearer the scrying would be. If he did it with an object they only touched once, it would be little more than haze and a vague location, but if it was a piece of jewelry they never took off, he'd be able to see and hear everything going on in their vicinity with perfect clarity. He wouldn't initially be able to view past events, but he'd likely be working on a way to achieve that somehow (though he wouldn't succeed for a very long while, if at all. It would be up to you).