Because you can't take a Pre war Martin to the beach
With its M&T neck joint, hybrid bracing, and horrendous tuning machines, most Martin aficionados would scoff at the Idea of this guitar even being mentioned alongside a Pre war D28; however, in atleast one sense I believe this to be the best reissue of a golden era Martin on the market. Sure, in this day in age you can buy an authentic series 1937 D28, and once it breaks in, it will be a very fine guitar (not that it isn't already). The problem with those is that with their hide glue construction and VTS cooked tops, they come with a fairly authentic price tag aswell. At the very least, authentic enough that you would never put a pickup in it, or gig with it, or play it around a campfire, or on a hot day, rainy day, before washing your hands, etc. And so how will these guitars ever truly break in? The Hd-16r is a player's martin with all the necessary pre-war aesthetics. It is a guitar that you can live with and create stories with. One which is capable of living the life those early martins lived before they became collectable, and at the end of the day when the finish on the top looks like Neil Young's "Hank" guitar, your hd-16r will have more in common with its pre-war counterparts than anything coming out of the martin custom shop these days.
I highly recommend; polishing the face of the headstock (an absolute must for any foil logo Martin in my opinion), bone pins, nut and saddle, and a set of open back Waverleys. This brings the price close to used hd-28v territory, but with its Adirondack top and 30s neck width and profile, I believe this to be the obvious choice.