If he can contribute now, there is no reason to shirt Lockhart. We have AJL coming in (assuming he stays as a WR) next year, and Lane next year, and every year So FL produces enough WR talent to replenish the playmakers who leave. This is the best recruiting grounds in the country for WR. As Ringz notes, if Lockhart can make that one great fade catch to score a TD, or even to move the chains, and step into the role Lewis was performing, it's worth it.
I'll admit I didn't expect it this year, but we can win the ACC Coastal right now. With our porous defensive line, we need as many weapons as we can get to put points on the board. We just need to end the game with one more point than Va Tech and UNC, and the Coastal is ours.