its...

Based on Iwata's statements, with their unified environment for NX games should come out much faster. However, this doesn't mean that they will make all games run on any peace of hardware, this simply means that they would be able to push out games much quicker. Super Mario 3D World and Captain Toad are good examples of this used in a different way: let's pretend Wii U didn't exist, if they created Super Mario 3D World to run on the NX console, they could have used that same engine and assets for Captain Toad on the NX Handheld. Same engine, assets, different games, and on different systems. Let's say they create an engine for Super Mario Universe NX, they can use that same engine, assets, models etc to create Super Mario 3D Whatever on the handheld, then Super Mario Galaxy 3 for the console, Captain Toad 2 for the console, then Corporal Yoshi on the handheld and then Commander Toadsworth for another handheld game. I don't believe they'll use the EXACT same models and textures for each game, there will be too many similar-looking games, so they could simply modify already existing models, physics, assets etc to suit their different art styles to make them look different. They'll also have different engines that are each better suited to certain types of genres, and they can use those engines and assets over and over again, with modifications of course, you need to make them look different

They may also make a more realistic engine for lets say Metroid Prime IV, and use that same engine with similar assets for a 2D Metroid on the handheld, or some other realistic series. Of course, they could even create all-new games that aren't from their flagship franchises with those same assets. Splat2on could use upgraded versions of Splatoon 1's models, and they can even create an Octoling-toon game as a spinoff using the same assets. No more starting things from scratch if they don't have to, and those assets will be movable across the handheld and console. Before Iwata's passing, he stated that this could be done regardless of performance of each system, meaning that differences in raw power won't be an issue. I'd say NX is a very interesting proposition, they're setting themselves up for potentially having their most varied platform ever. They'll be able to make more games much faster. Hopefully they don't screw it up.

You're idea of reusing assets and engines is nothing new and has been done before ... a lot actually.

This is why indies use a common engine like unreal or unity to make games, because they don't have to completely remake or redesign custom assets or engines.

Just look at majora's mask. It grew out of being a ocarina of time expansion.

The biggest issue with using a common engine however, is that these engines have to be optimized for each console, not only that, but games have to be designed around that engine. Unless you want every game to be a 3d platformer, you probably want different teams making different engines to play to the specific game's advantages. It's not like you can suddenly run mario kart 8 on the super mario 3d world engine and expect the same performance. You get around the need to optimize as much by having powerful harware.

If I need to move 4 blocks, my max limit is 5 blocks, but I only put 3/5 the effort, I'm only moving 3 blocks and fail my goal. The solution to this is to put 4/5 or 5/5 of my full strength (optimizing my output), or have more power in the first place to make my max output 10 blocks (having powerfuller resources).

Why is this important, because in order for a handheld to run an engine that runs on a home console, the home console version needs to be crap or the handheld version needs to be GREATLY optimized or the handheld needs to have crazy specs for a handheld

Ewwwww, Battalion Wars... better just stick to Nintendo Wars.

They make enough games it's just the lack of third party that hurts them. And acquiring people and companies is good but it cost money and bringing people up to speed on how you operate can be challenging.

I don't mind if he has starred in several different genres (platforming, RPG, brawler, karts...), what I actually mind is gameplay variety. I understand some people can be tired of Mario, though.

OT: Nintendo is maybe one of, if not the the most prolific software company in the market, so I don't know how they can make even more games XDD

What about second party? Nintendo can pay to Capcom to make new Monster Hunter for Wii U or NX or whatever. There is no financial risks, it will sells like hot cakes. Same with new Resident Evil (spin-off, probably). Gamefreak can make open-world Pokemon RPG and swim in money. More Musou games from KT, more projects from Namco Bandai, etc.

Well thats one of reasons of all this talk about unifying handheld and home consoles, so they could faster make games.

I don't even know why they don't hire more developers... they're leaving back so many IPs ...

Probably because they've been working on NX stuff for a few years now.

They released plenty of software for their systems during the Wii DS era.