If SA take Castle at 4 like many expect, I would assume Sheppard would be long gone by 8. If Dillingham is already gone or if people have issues with his slightness of frame, McCain is probably not a bad alternative - he might be the best shooter in the draft, and has one of the highest half-court rim% of all the freshman guards. He is most likely a combo guard at the next level - he is basically CJ McCollum crossed with a fire hydrant, with hidden playmaking upside given his role in high school as well as the fact that he was sharing the court with two pure point guard in Proctor and Roach. Having him as at worst your 3rd guard who gives you much needed shooting while waiting for 2025 for your wings may not be a terrible consolation prize.