There are plenty of factors that will prove decisive in whether the Longhorns get it done in 2019, but Longhorn receivers winning against man coverage outside is one of the less explored dimensions. If there's a subtle sabotage of the 2019 season that doesn't involve injury, this is one real possibility. As part of my Thinking Texas Football preview research, I just finished reviewing the Longhorn passing game performance against higher end cornerbacks and then assessed the schedule quality of 2019's slate of outside defenders.
If equating building a football team to building a car, a great group of wide receivers would be aftermarket wheels and performance tires. The coaching staff would be navigation, electronics, sensors, and in the case of Will Muschamp, the fuses. The offensive line would be the engine; the quarterback the drivetrain. Etcetera.