That's the thing though, how much more hair is he going to lose around the trasplant area, how many more transplants is he going to need, what does he do when he has the classic horseshoe at age 65 and a huge scar on the back of his head and a clump of transplants up front?
That's why I'm not a big fan of transplants, but that's just me. If I were him though I would at least have his current transplant fixed, and filled in more at the hairline.