Order
Yeah, the fun thing with warrants is that pesky probable cause requirement. We'll need to force them public enough so that Malfoy's money and Rookwood's charm don't buy the wrong people off - not to mention the people within the DMLE who are either potentially corrupt, puppets, or are under the Imperius.
Which is why I think the Prewett's plan is a good start. We need them doing predictable shit beyond the shadow of anyone's fucking doubt. And I like the reconnaisance idea.