There are certainly options to make this happen, and some projects they really oughta do. Obviously, that Skyward Sword HD port is one thing. Another thing they OUGHT do to is bring out a compilation featuring the 3DS remakes and Wii U remasters. I’m sure loads of people would love to play OoT and MM 3D on a TV with a new HD sheen for the first time, and I’m sure others are interested in getting Windwaker and TPP on a portable device. Asking for a collection with all three might be a little too much too ask from Nintendo, but releasing them in two-games-per-compilation volumes (with volume 3 featuring Skyward Sword and BotW) would also be pretty cool. I just hope Nintendo doesn’t drip-feed these games in lone, $50-$60 releases, though thats kind of what I expect. The only HD remaster that ought to get a stand-alone release is Skyward Sword, IMO.
Of course, while 2019 may be too early for BotW2, I do hope Nintendo doesn’t take another 5 or 6 years with the next game. They already got great tech in place. No need to COMPLETELY rebuild from the ground up. Fingers crossed for BotW2 by 2020. I’d love some sort of Majora’s Mask-esque spin-off that focused on the rebuilding of Hyrule and made Zelda the playable character, myself.
And, finally: Nintendo should definitely do another single-player 2D Zelda. If they do, I hope it features hand drawn sprites instead of 3D polygons.