A post-transplant report detailing growth rates would be much more difficult than the one-off study based on a small hair patch in Talizi's post (which was excellent, no doubt about it). I can't say this for sure (and I certainly cannot say that this is Dr Rahal's opinion), but my gut feeling is that the majority of doctors would consider it too much hassle, and, in comparison to a patient's own assessment of their result, largely redundant.
Of course it would be nice if we could have all of this data, but it would be very time consuming to compile.
As for the pre-transplant report, that also seems time consuming and I think that basically doctors already do consider the most important parts of it, such as density, miniaturization and total graft potential, before they do surgery. They just don't write a thorough report about it. Hair conditions are changeable too.
I'm just being honest as well as playing devil's advocate really. I'm not against these ideas.