B&N may be losing me as a customer for the silliest reason.
Shortly after my year-long warranty on my Glolight expired, the rubber border started tearing and I simply couldn't get an answer on how to get a replacement. I was pretty happy with the Glolight until then, it took SD cards and had a good resolution and lighting. About the only complaints I had were the raised power button and limited memory (seriously, why couldn't they have doubled the memory capacity when they released it?).
The frayed rubber was annoying but some months later, the rubber went beyond fraying and simply snapped. Then the top frame started coming off while the Glolight was in my laptop case or cargo pocket. Some months later, the 'n' button came out of the case and got lost -- no matter, I could still use the power button to wake it. Then the power button came out and I had to resort to keeping a paper clip handy so I could poke at the real buttons.
This got really inconvenient on my trip overseas as I found myself camping or hiking in conditions where having my ereader fall apart was ... suboptimal. I started taking my HD with me on daily trips -- bad idea as it fell out of my pocket into bottom of the canoe and lay there for a good 20+ minutes (unbeknownst to me until I got out of the canoe). I tried the bag-of-rice trick and still get a blinking red LED when trying to charge it.
Flash forward to this week. I finally broke down and bought another ereader which shall remain nameless but it's EPUB-friendly, has excellent resolution, and I no longer have to worry about grabbing a zippered plastic enclosure to use it in the hot tub. I found I had to hack said ereader to set my own screen saver images (randomized B&W comics). It took a little work but the hack was fairly easy. The new ereader has more effective memory but is a pain in the butt because it seems to crash while processing content if the EPUBs are "malformed". It uses a backlit LED system that's okay but I preferred the Glolight display as well as the ease of turning the lighting on only when desired/needed. I don't mind it being slightly bigger but it's heavier than my Glolight was (not by much but I was really impressed with how light and handy the NST and Glolight were).
I would love to see a new Nook that combined the resolution and IP67 quality of my new ereader with a form factor and display quality similar to the Glolight -- and please, if you're going to use rubber bits that fray, provide a way for consumers to replace them. I would gladly have bought a replacement rubber strip last year! Keeping the NST form factor with an improved Glolight display and more memory would have been ideal for me -- I liked the buttons for page flips instead of continually swiping.
As far as the HD goes, I preferred the HD to the Samsung NGT. I couldn't believe how Samsung neutered the Galaxy Tab and Galaxy S5 with inadequate memory when flash memory was so cheap. I understand why BN corporate wanted to get out of the business of designing and building their own ereaders and tablets but for a short period, BN really led the way and had the best designed products. IMO, going the walled garden route was what killed them.