You think SMT and Etrian Odyssey won't be on Nintendo consoles anymore? That makes no sense.
Even less than saying that Atlus isn't supporting the 3DS, even if you mean that they don't really want this platform to succeed (what?).
For the handheld, 3DS was more powerful than the PSP, the new one will likely be more powerful than the Vita, which wouldn't be too hard with regular chips nowadays.
Even if I don't see VIIR getting a port due to the graphics focus and combat system, never say never for DQXI until we get more infos on the hardware. It could be ported, and has a different design philosophy.
Not sure why we're even talking about this now anyway when people are talking about NX console ports for those games. NX handheld is about games where crossplatform (inter-NX) would make sense (like nintendo games, a MonHun HD, etc).
The limitation on handheld power is not getting a sufficiently powerful CPU/GPU into the form factor, but rather the heat/power consumption issues that running one above a certain level raises. There is a reason even the Vita CPU is under-clocked, and most phones(and even laptops) are set to heavily throttle performence if heat rises beyond a certain point. You really do not want the form factor of the Sega Nomad/Game Gear along with its battery life, especially when matched with a price around $350?
Quite simply, on the price/form factor nexus, there is no way to get something at the size of the N3DSXL, much less the normal one, which has a GPU capable of running major PC/Console titles at even minimal settings, at a power envelope less than 10% of that of the PS4, which is a bit above where the N3DSXL is.
Nintendo has always gone for usability over power. I do not think they will risk having a system with theoretically high specs only to have users suffer sub 10FPS performence after 20 minutes of use when the thing begins throttling itself.
I suspect we get something along the lines of a specialized mobile card. For an idea of that take a look at the MT760 which in the Note 5. This may be above what we are getting price-wise, but seems a good ceiling.
http://www.notebookcheck.net/ARM-Mali-T760-MP4.148383.0.html
The closest laptop card they have with benchmarks is the Intel HD Graphics 4200
http://www.notebookcheck.net/Intel-HD-Graphics-3000.37948.0.html
If you look at the benchmarks list, it can run Diablo 3 and FIFA at minimum settings, and if paired with a strong processor it can get to 20 FPS or so in Skyrim(implying that with a lot of optimization it might be able to get close to 30 FPS on say a 540p display). But if you want to avoid that sort of specific optimization, which is kind of the point of unified architecture, you are probably going to have a lot of the same issues as the Vita with multiplats and ports, namely that they will run with erratic framerights do to throttled performence.
