I haven't watched Leverage yet, but I'm starting to think I ought to.

I know what you mean about the OT3, though... I actually find a lot of fandoms where this solves problems. Nine/Rose/Jack, Peter/El/Neal, Tony/Pepper/Loki, and of course the original Trio, because if Harry isn't distracted by Draco in leather pants, I feel sad if Ron and Hermione leave him out.