[quote=@IceHeart]I suppose for myself, as someone with a little of an acting background, I actually enjoy the challenge of trying to be [i]in character[/i].[/quote]

Your interpretation of that character, as guided by a director. Some people will find canon characters sympathetic and others unsympathetic. It's interpretation, and when somebody with a particular view plays that character, they're going to frame them from that angle; which is going to be incredibly jarring to anybody that doesn't share the original interpretation, or who hasn't agreed on a communal interpretation of that character.

Leave 'em in the canon.

Apart from anything else, I feel like a character is built to suit a contained plot and vice versa. Taking them out of the action that they shape and that shapes them feels inappropriate to me, unless they're expressly being presented as a radical new interpretation.