The simplest prop angle there is: players who keep clearing (or keep missing) the number they are posted at tonight. When a receiver has cleared his line in nine of his last ten, either the market is slow to reprice his role, or the run is luck about to cool off — telling those apart is the whole game.
That's why the model column is there. Our model already knows the streak and adjusts for runs that outpace a player's season — when it still agrees with the streak, the streak has support.