How about premium titles at a discount for those that want both?

It will probably be at nintendo's suggestion to third party developers and their own discretion.

They will have value games like captain toad and kirby (or mario golf on 3ds) that will come out cheaper, but i think it will be a solid price for both, which is ok only if they still have cheaper games as well.

If they throw it all out and you don't get the really good rpg's you got on the 3ds with lesser graphics at a cheaper price that will suck.

I think Miyamoto was speaking of the direction he wants to lead Nintento in. He wasn't referring to the Wii U and the 3DS, nor was he referring to the NX. He was referring to a hypothetical development platform that may or may not exist some day. Whether or not the NX is that hypothetical platform remains to be seen, but it's far more likely that the NX is a step in that direction, but not the end goal of that quote.

If they overcome that challenge, Nintendo went from years behind Sony and Microsoft in terms of operating systems, infrastructure, and development tools (both hardware and software tools), to years ahead from one console to the next. Based on my experience working directly with Nintendo I have absolutely zero confidence that they were able to create a development enviroment that allows developers to quite literally compile one game and it work on multiple hardware specifications. It doesn't seem remotely practical for anyone to pull off at this day and age, much less Nintendo.
I do not believe this is what they have done at all. I think they've made two seperate consoles, with similar specs, similar development tools, and similar OSs and are hoping that's enough to encourage third parties to develop on both system. It will not be easy to port between one platform and the next, but it will be easier. Those are two completely different things.

should be mostly $49 and under. If big 3rd party games are there, the standard $59 would still apply.

okay, then yes we do indeed seem to be on the same page.  i just wonder if nintendo can be more successful here than sony was.  on paper this cross-buy stuff sounds like a customer dream come true.  at the very least i love the fact that i can decide which platform i want to play a game like super meat boy or broken age because i have them for both vita and ps4 without having to buy it twice.  for me super meat boy just feels right on a handheld while i'd prefer the big screen for broken age.

..but the big critisism for vita is most of its library is also ps3/4 so why bother having both devices.  i wonder how nintendo's overall fortunes are impacted if a lot of nintendo fans decide owning both platforms isn't needed anymore and then just buy one or the other.

I think it's also worth nothing that Sony, for the most part, has completely abandoned the cross-buy strategy for anything other than indies and other smaller games. I don't think it payed off too well for them.

American Price wise, I would say it would be $50-$60..

If the next Pokemon offers Wii U level graphics, I think people will quickly forget the price hike ;) 

Very doubtful, Pokémon looks like that even with Wii U level hardware. Pokemon never makes strong use of the hardware it's on, look at Pokemon X/Y or OR/AS compared to some of the best looking 3DS games.

They tried it in Europe with the N64 :p