You're a perfectionist, these guys have almost all their hair left. Why should they shave their hair?
Should all people with non perfect hair quality shave their heads? I mean, a lot of women have far from perfect hair: "shave it off, it's not perfect".
Don't want to be rude, but your view on...
Mick Jagger has all his hair left, his brother has a little bit less, it's always the same story with famous guys and their brothers. Almost sure it's pieces and extensions to some extent on almost all rock an film stars over forty.
Point is, if you expect an over all thickness looking like this specific photo of Tillman, you will most likely be very disappointed. I don't want anybody to be disappointed, there are too many problems with losing your hair anyway.
So look at all Hassan & Wongs photos of Tillman (and others)...
The above picture of Tillman is from his absolute best angle though, hair wise. If you look at other pictures you will see that the overall thickness is far less.
Nevertheless it's a pretty good hair transplant. But it's almost 10000 grafts, I guess it's more or less pushed to its limits, can't be much more...