Not really a gameplan, but things I'd like to see them do:
Have Coles and Thrash start, with McCants as the #3 WR. Have Gardner hold a ball while sitting on the bench.
Hand the ball to Portis about 25 times, and 10 more to Betts.
Spread the ball around...get it to Cooley at least a few times.
Get Sean Taylor more involved in the D.
Blitz the hell out of Testesverde. Have Lavar pull "an Aikman" on him to let him know what it means to be a Dallas QB playing the Redskins.
Opening play prediction: Flea-flicker to Coles for a TD.