Trevor Penning is PFF’s top graded Saint; Penning is highest graded NFL OT in Week 10

That makes zero sense. Penning can capitalize on his strengths at RT. I'd leave him where he is and let him become one of the best.
He's showing Ramczyk levels of run-blocking with a bit more of a mean streak. His Armstead-like athleticism doesn't hurt, either. He's been demoralizing guys even going back to the first game of the season. Still gotta work a bit on pass-blocking, but that seems to be developing at a steady pace. He recovers better on those occasions a pass-rusher gets into his chest and he's even doing better against the guys who can combo moves together, which tells me he's been spending a lot of time practicing against Cam.