OK, now, to continue...
Those dual-screen handheld systems are very amazing to have, but, lately, the importance of handheld gaming is in need of greater resurgence, even at the face of mobile games, along with PC & home console gaming being less fun in the way many game companies are doing lately at the behest of many players.
The preservation of exclusive handheld games, such as those made for the DS, DSi, and 3DS, both physical and digital, are in need of greater attention than ever, and I strongly feel in my heart and mind it won't likely take just Nintendo alone to do that kind of work(which is obvious, because of what they did and have been doing that's harming gaming preservation rapidly lately, and still won't stand for it and let that be so by doing nothing).
Who is to say the days of dual-screen handheld gaming should stop just because Nintendo has the say-so, as many think and believe? It was us, the people, even those from Nintendo, that gave such systems, so it still is up to us, the people, to make such new handhelds, even if we have to do it on our own.
This is stemming from the inspiration of what I saw in a video about what a new handheld system is like for both screens' viewports to be in their widescreen-like format, such as this video here - https://www.youtube.com/watch?v=VHH_7FXss60 (this is to show how cool it is to see both screens wide on an actual handheld if such a one was made for the gameplay to be like what is seen here)
What would I perceive from an actual handheld system is to be an actual, standalone successor to the 3DS family that continues the dual-screen gameplay like those systems did, but have unique inclusions that no other gaming system could try to replicate, even on mobile. Even continue the convenient ways of storytelling to games on the handheld's both screens, but in greater ways than many had done possible before.
It needs to be what kids & adults can really enjoy as if handhelds' days aren't ever going anywhere, with unique additions no one expected(and, I don't mean specific, certain hardware & software changes that can be privacy-intrusive & breaching, you know?).
The one thing I would really enjoy from it is the matched screen sizes, both screens being widescreen-like (preferably quite a bit wider and taller than the 3DS & even the PSP's viewport size(which is, 480x272, that size of which I like). I could say both screens' viewports being a custom-made resolution sizes of maybe... 494x286, both for each screen. And it would have to be done on custom-made, non-mobile based and made hardware, and have new additional hardware features none could replicate, along with the CPU and GPU being much, much more powerful than the 3DS, Vita, or even the Switch family, which doesn't count as the handheld line(especially the Switch Lite, for it is still an offshoot of one).
What could you imagine such handheld games being made with these screens at those sizes? For me, I could imagine a new Kokopolo installment in that, because the first game had its screen sizes being a bit tight to see what's going on the field and how and what to react in situations when chasing enemies & avoiding hazards. To have such a game being seen on those screen sizes, along with others, well, it makes it easier to watch for dangers in many situations, yes?
Even Jools Watsham, Atooi's owner, posted a lament about a handheld system not having its own digital game marketplace, like the PlayDate, for instance, so the new handheld system should have one like how the DSi & 3DS had before. Post from Twitter here - https://twitter.com/JoolsWatsham/status/1516114407734001670
To any who feel about this otherwise, I don't advise laying out some cynical, apathy, and downplaying to lower handheld lovers' hearts & minds. Were trying to give out and spread great positivity about this, here.
It takes a good amount of amazing people that has such hardware designing talents, skills, & know-how to make such a new non-mobile based handheld system. There's still lots o' potential in handheld gaming systems that hasn't been reached yet. You just got to think really deep to get there and be ahead of it all.