Thanks to everyone for the response. Some nice sets here.
@Snowflakes, wouldn't Riolu run Prankster to get Priority Copycat? I'm assuming you made a mistake in the typing.
@Django and EBeast, I've been trying out SubDisable Haunter lately as a more offensive replacement for Misdreavus. He seems alright, he hasn't done that much as of late but that's probably because of my consistently bad play.
Will update the OP later.