Let's Pretend there Will Be a 3DS Successor

The general assumption in the gaming world seems to be the Switch is going to replace both Nintendo's handheld and home console lines. I don't know if that's true and don't really care. Let's pretend there will be a true 3DS successor, not another iteration but a full-on newly designed from the ground up handheld from Nintendo. This is what I would like to see from it:

Keep the 3D, lose the dual screens. Let's call it the Game Boy 3D because Game Boys are awesome. The DS had some games that made cool use of the two screens but it seems like it's just used for inventory and maps these days so screw it. Every other system does w/o them so I think you should be able to find an engineer that can make this work.

Dual analogs, like for real this time. The New 3DS's solution to having two shoulder buttons on each side worked great but the dinky second analog just doesn't cut it. The 3DS slider style analogs feel better to me than the mini joysticks on the Vita so stick w/ them. Put them both up like they are on Wii U Pro controller because that feels great and people who don't like the Wii U Pro controller should choke to death on rotten cheese.

Don't make any new Mario games for it, just re-release a bunch of old ones. This worked for GBA so it will work on the GB3D.

Do make new Zelda games. Do make new Metroid games. Also make me a sandwich.

Put games on cartridges and I don't mean cards you call cartridges. If it doesn't seem like something I can reasonably blow into to get it working, I might as well just download it. Make a substantial cartridge and the people will come flocking to your system because nobody else has a cartridge worth a tinker's damn these days. I am talking at least a quarter inch thick here. Ideally, the label will wrap over the edge so you can read it while it's inserted in the machine.

The new Zelda game you make for it absolutely must come on a gold cartridge, by the way. I feel like I shouldn't even have to say this.

Keep the focus on good single-player experiences because you aren't always online when you are on the go. Come up w/ a new IP or two and provide good support to third party developers so the games don't dry up.

Make sure the speakers aren't covered up by your hands when you're playing.  Place the analogs such that if your fingers slide off them a little bit you don't wind up w/ fingerprints all over the corners of the screen. Put the volume slider where you don't accidentally nudge it while playing. Make the battery user replaceable and upgradable. Continue using non-proprietary storage formats.

Keep the Pokemon games coming. I actually don't give a crap about this franchise so I'm really just throwing the gaming community a bone w/ this one. People love that shit.

Most importantly, actually make a 3DS successor. We have been on this same system since 2011 w/ only minor upgrades nobody cares about. I am a big enough fan I've bought three versions so far but buying a fourth... Okay, yeah, I'll probably buy a fourth eventually. But a fifth, no way! The Switch is too big to fit in my pocket and I don't see myself lugging it around. Besides, anyone who is not leery of hybrid anything is a rube. So make a real handheld and make it awesome because awesome is good and not awesome sucks.