Those are the right questions, but he might be gone. Still, since there are others built that with shorter arms, Dior Homme is another possibility.
Mr. Crane probably needs MTM or even bespoke, due to the extreme arm length.
So-called "small questions" usually are ignored.
It needs to be said that that fits poorly, too big in the chest and probably the shoulders. It's an out-of-shape-middle-aged-man look. Also, the pants look too tight at the hips.
Unless there is a recent Consumer Reports article on dress pants, any stories about the durability of particular dress pants likely will be limited in value. Therefore, choosing heavier wool (not cashmere) in a fit that isn't too long or too tight anywhere and laundering carefully are the simple guidelines for getting years of life from dress pants.
If it's neither male-pattern baldness nor alopecia areata (which usually looks different), chances of regrowth are excellent, with the right changes. The dermatologist's job is to figure that out (cause and probably active treatments). Minoxidi/Rogaine all over the head might be the wrong approach, one reason being that so much of it could get into the bloodstream and for example lower blood pressure too much.
No hat might help if there's a scalp condition. The wash-less advice lives on the Internet, but there's almost no validity to it. Only an extremely irritated scalp might benefit from shampooing less (and it probably would be smarter to switch shampoos and rinse better). For most men, washing less increases the risk of hair loss.